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Currently supported: All versions

Forge 1.12.2 not launching

nobii
in Support & Bug Reports

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Posted

Hi, I'm having a problem downloading Forge 1.12.2. When I download it (using the .jar and the .exe), it always says successfully installed. However, when I look in the "versions" folder of the .minecraft directory, the .jar file for forge 1.12.2 isnt there. Minecraft is now unable to launch forge 1.12.2. Every time I try, I get an error saying the game crashed without it even opening (presumably because of the missing .jar file). Forge works on the other versions I've used (1.13, 1.14.2, 1.14.3).

  • Author
20 minutes ago, diesieben07 said:

Where did you get the idea from that there should be a jar file? The jar file is not missing. It is not supposed to be there.

 

Post logs.

Oh, the only reason I thought there was supposed to be a .jar file was because there's a .jar file in every MC version, even the other forge ones. There are also no logs, if the ones in the "logs" folder are what your talking about.

MC_1.PNG

MC_2.PNG

  • Author
26 minutes ago, diesieben07 said:

Old forge version copy the vanilla jar to work around launcher limitations.

Modern forge versions do some vanilla-patching work in the installer to improve game startup time. It is normal for 1.12.2 to not generate a jar file.

 

Please post the launcher log then.

How can I view the launcher log? When forge fails to load, there is an option that says "View Crash Report", however when I click that nothing happens.

  • 2 weeks later...

We don’t even have a log, why are you so sure you have the same issue?

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]

 

  • 1 year later...
On 7/27/2019 at 5:02 PM, CreeperFURYX said:

Hey i just fixed the problem. i suggest reinstalling forge and deleting your current one

that didn't work for me, kept on like this: Image link here.

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https://forums.minecraftforge.net/topic/72991-forge-1122-not-launching/
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