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Currently supported: All versions

no main manifest attribute

ForTimeBeing
in Support & Bug Reports

Featured Replies

Posted

I am trying to download forge for linux. Using the installer, it WORKS but forge crashes the second I start minecraft. Since it is linux I figured i needed either the universal or source folder, both files say; no main manifest attribute when I try to run it though. I have already tried running with admin as well as running it with java-8 since I read somewhere forge uses older versions of java.

Where are you getting Forge from and how are you trying to install it?

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

 

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

 

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

 

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

 

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler
  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

 

 

 

or alternately, 

 

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

 

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

 

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

 

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

 

  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

 

  • Author

I got it directly from forge's website. I tried installing it with java -jar but im thinking the universal/source files are not meant to be installed that way. Currently getting multimc and going to try adding in forge with that

I'm always suspicious when people say "The official site" or something like that, because often they have been fooled by a pretender.

Please provide a URL

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

 

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

 

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

 

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

 

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler
  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

 

 

 

or alternately, 

 

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

 

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

 

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

 

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

 

  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

 

Ok, and you went for universal instead of installer, why?

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

 

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

 

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

 

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

 

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler
  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

 

 

 

or alternately, 

 

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

 

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

 

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

 

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

 

  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

 

  • Author

I am using linux and when running forge with the installer, (it installed fine) But when starting it in the client it would crash stating; An unexpected issue occurred and the game has crashed. We’re sorry for the inconvenience. I tried both the newest and recommended version both the same problem. Figured it was because the installer was for windows only.

The installer works for every system, a crash at runtime does not necessarily mean the installation went wrong.

Please provide the debug.log from the server's logs folder

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

 

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

 

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

 

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

 

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler
  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

 

 

 

or alternately, 

 

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

 

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

 

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

 

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

 

  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

 

  • Author

(I believe this is the one; I have restarted with multimc, going to try this before going back)

 

Spoiler

[20Sep2019 19:07:47.530] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--username, ForTimeBeing, --version, 1.14.4-forge-28.1.0, --gameDir, /home/pineapple/.minecraft, --assetsDir, /home/pineapple/.minecraft/assets, --assetIndex, 1.14, --uuid, f955b373c9e7462381b9784972f28fdd, --accessToken, ❄❄❄❄❄❄❄❄, --userType, mojang, --versionType, release, --launchTarget, fmlclient, --fml.forgeVersion, 28.1.0, --fml.mcVersion, 1.14.4, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20190829.143755]
[20Sep2019 19:07:47.533] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 3.2.0+60+b86c1d4 starting: java version 11.0.4 by Ubuntu
[20Sep2019 19:07:47.743] [main/INFO] [net.minecraftforge.fml.loading.FixSSL/CORE]: Added Lets Encrypt root certificates as additional trust
[20Sep2019 19:07:48.069] [main/INFO] [STDERR/]: [jdk.nashorn.api.scripting.NashornScriptEngine:<init>:143]: Warning: Nashorn engine is planned to be removed from a future JDK release
[20Sep2019 19:07:48.475] [main/INFO] [cpw.mods.modlauncher.LaunchServiceHandler/MODLAUNCHER]: Launching target 'fmlclient' with arguments [--version, 1.14.4-forge-28.1.0, --gameDir, /home/pineapple/.minecraft, --assetsDir, /home/pineapple/.minecraft/assets, --username, ForTimeBeing, --assetIndex, 1.14, --uuid, f955b373c9e7462381b9784972f28fdd, --accessToken, ❄❄❄❄❄❄❄❄, --userType, mojang, --versionType, release]
[20Sep2019 19:07:48.651] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
[20Sep2019 19:07:48.652] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]:     at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:39)
[20Sep2019 19:07:48.652] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]:     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:50)
[20Sep2019 19:07:48.653] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]:     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:68)
[20Sep2019 19:07:48.653] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]:     at cpw.mods.modlauncher.Launcher.run(Launcher.java:80)
[20Sep2019 19:07:48.653] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1050]:     at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)
[20Sep2019 19:07:48.654] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]: Caused by: java.lang.reflect.InvocationTargetException
[20Sep2019 19:07:48.654] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]:     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[20Sep2019 19:07:48.654] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]:     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[20Sep2019 19:07:48.655] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]:     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[20Sep2019 19:07:48.655] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]:     at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[20Sep2019 19:07:48.655] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]:     at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56)
[20Sep2019 19:07:48.656] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]:     at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
[20Sep2019 19:07:48.656] [Client thread/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1059]:     ... 4 more
[20Sep2019 19:07:48.656] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]: Caused by: java.lang.UnsupportedOperationException
[20Sep2019 19:07:48.657] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassVisitor.visitNestMemberExperimental(ClassVisitor.java:248)
[20Sep2019 19:07:48.657] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:651)
[20Sep2019 19:07:48.657] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
[20Sep2019 19:07:48.658] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83)
[20Sep2019 19:07:48.658] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.access$100(TransformerClassWriter.java:35)
[20Sep2019 19:07:48.658] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter$SuperCollectingVisitor.visit(TransformerClassWriter.java:129)
[20Sep2019 19:07:48.658] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:525)
[20Sep2019 19:07:48.659] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
[20Sep2019 19:07:48.659] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83)
[20Sep2019 19:07:48.660] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.access$100(TransformerClassWriter.java:35)
[20Sep2019 19:07:48.660] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter$SuperCollectingVisitor.visit(TransformerClassWriter.java:129)
[20Sep2019 19:07:48.660] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:525)
[20Sep2019 19:07:48.660] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
[20Sep2019 19:07:48.661] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83)
[20Sep2019 19:07:48.661] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.access$100(TransformerClassWriter.java:35)
[20Sep2019 19:07:48.661] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter$SuperCollectingVisitor.visit(TransformerClassWriter.java:129)
[20Sep2019 19:07:48.662] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:525)
[20Sep2019 19:07:48.662] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.ClassReader.accept(ClassReader.java:391)
[20Sep2019 19:07:48.662] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.computeHierarchy(TransformerClassWriter.java:83)
[20Sep2019 19:07:48.662] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.getSupers(TransformerClassWriter.java:54)
[20Sep2019 19:07:48.663] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformerClassWriter.getCommonSuperClass(TransformerClassWriter.java:99)
[20Sep2019 19:07:48.663] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.SymbolTable.addMergedType(SymbolTable.java:1209)
[20Sep2019 19:07:48.663] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.Frame.merge(Frame.java:1293)
[20Sep2019 19:07:48.664] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.Frame.merge(Frame.java:1175)
[20Sep2019 19:07:48.664] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.MethodWriter.computeAllFrames(MethodWriter.java:1604)
[20Sep2019 19:07:48.664] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.MethodWriter.visitMaxs(MethodWriter.java:1540)
[20Sep2019 19:07:48.664] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:807)
[20Sep2019 19:07:48.665] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:687)
[20Sep2019 19:07:48.665] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at org.objectweb.asm.tree.ClassNode.accept(ClassNode.java:436)
[20Sep2019 19:07:48.665] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120)
[20Sep2019 19:07:48.666] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:236)
[20Sep2019 19:07:48.666] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:127)
[20Sep2019 19:07:48.666] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:97)
[20Sep2019 19:07:48.666] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
[20Sep2019 19:07:48.667] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     at net.minecraft.client.main.Main.main(SourceFile:155)
[20Sep2019 19:07:48.667] [Client thread/INFO] [STDERR/]: [java.lang.Throwable:printStackTrace:648]:     ... 10 more

You need to use Java 8, 9, or 10 with Forge.

To support 11 Forge would need to drop support for 8 (due to a core library doing so) which can't be done because 8 is what Mojang ships with the game.

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

 

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

 

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

 

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

 

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler
  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

 

 

 

or alternately, 

 

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

 

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

 

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

 

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

 

  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

 

Provide a debug.log for the run with Java 8

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

 

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

 

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

 

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

 

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler
  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

 

 

 

or alternately, 

 

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

 

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

 

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

 

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

 

  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

 

  • Author

I have it working now with multiMC, although if you would like later I could try it again and give you the log for debugging. I have been messing around with it for a good 2 hours though so I am going to take a break and actually enjoy the game

  • 1 year later...
Guest
This topic is now closed to further replies.
https://forums.minecraftforge.net/topic/76290-no-main-manifest-attribute/
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