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Minecraft Forge 1.5.2-7.8.1.738 server issue

FewerBeast5036
in Support & Bug Reports

Featured Replies

Posted

I have been trying to run a server with forge for the past 2 days, but every time i try to run the mincraft-forge jar, i get "A Java Exception has occurred". I have ran forge servers before and never had any problems, i updated java, and tried re installing the forge server, but nothing works. The weird thing is, it doesn't seem to produce a crash report like normal, i car run a normal server just fine, and any 1.6.x servers as well, just not the 1.5.2 i need?

Logs?

Read the EAQ before posting! OR ELSE!

 

This isn't building better software, its trying to grab a place in the commit list of a highly visible github project.

 

www.forgeessentials.com

 

Don't PM me, I don't check this account unless I have to.

  • Author

That one of the problems, it doesn't even produce normal logs because it wont even start, it pops up in a text box

  • Author

So i installed it Universal, and got logs from it, it looks like the files wont download cause the link its using doesn't exist

 

 

2013-10-18 10:46:08 [iNFO] [ForgeModLoader] Forge Mod Loader version 5.2.23.738 for Minecraft 1.5.2 loading

2013-10-18 10:46:08 [iNFO] [ForgeModLoader] Java is Java HotSpot Client VM, version 1.7.0_45, running on Windows 8:x86:6.2, installed at C:\Program Files (x86)\Java\jre7

2013-10-18 10:46:08 [FINE] [ForgeModLoader] Java classpath at launch is C:\Users\Nick\Desktop\Qcraft\minecraft_server.1.5.2.jar

2013-10-18 10:46:08 [FINE] [ForgeModLoader] Java library path at launch is C:\Program Files (x86)\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;c:\Program Files (x86)\Intel\iCLS Client\;c:\Program Files\Intel\iCLS Client\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel® Management Engine Components\DAL;C:\Program Files\Intel\Intel® Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel® Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel® Management Engine Components\IPT;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files\Java\jdk1.7.0_21\bin;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;.

2013-10-18 10:46:08 [FINE] [ForgeModLoader] Enabling runtime deobfuscation

2013-10-18 10:46:08 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-small-3.2.jar

2013-10-18 10:46:08 [iNFO] [ForgeModLoader] Download complete

2013-10-18 10:46:08 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar

2013-10-18 10:46:10 [iNFO] [ForgeModLoader] Download complete

2013-10-18 10:46:10 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.1.jar

2013-10-18 10:46:10 [iNFO] [ForgeModLoader] Download complete

2013-10-18 10:46:10 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar

2013-10-18 10:46:10 [sEVERE] [ForgeModLoader] There was a problem downloading the file bcprov-jdk15on-148.jar automatically. Perhaps you have an environment without internet access. You will need to download the file manually or restart and let it try again

 

2013-10-18 10:46:10 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/deobfuscation_data_1.5.2.zip

2013-10-18 10:46:11 [iNFO] [ForgeModLoader] Download complete

2013-10-18 10:46:11 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/scala-library.jar

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] There was a problem downloading the file scala-library.jar automatically. Perhaps you have an environment without internet access. You will need to download the file manually or restart and let it try again

 

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] There were errors during initial FML setup. Some files failed to download or were otherwise corrupted. You will need to manually obtain the following files from these download links and ensure your lib directory is clean.

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/argo-small-3.2.jar

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/asm-all-4.1.jar

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/deobfuscation_data_1.5.2.zip

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/scala-library.jar

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] <===========>

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] The following is the errors that caused the setup to fail. They may help you diagnose and resolve the issue

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] A download error occured

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] A download error occured

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] <<< ==== >>>

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] The following is diagnostic information for developers to review.

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] Error details

java.lang.RuntimeException: A download error occured

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:548)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:165)

at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)

at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)

at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)

Caused by: java.io.FileNotFoundException: http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:532)

... 5 more

Caused by: java.io.FileNotFoundException: http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)

at java.net.URLConnection.getHeaderFieldLong(Unknown Source)

at java.net.URLConnection.getContentLengthLong(Unknown Source)

at java.net.URLConnection.getContentLength(Unknown Source)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:531)

... 5 more

2013-10-18 10:46:11 [sEVERE] [ForgeModLoader] Error details

java.lang.RuntimeException: A download error occured

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:548)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:165)

at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)

at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)

at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)

Caused by: java.io.FileNotFoundException: http://files.minecraftforge.net/fmllibs/scala-library.jar

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:532)

... 5 more

Caused by: java.io.FileNotFoundException: http://files.minecraftforge.net/fmllibs/scala-library.jar

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(Unknown Source)

at java.net.URLConnection.getHeaderFieldLong(Unknown Source)

at java.net.URLConnection.getContentLengthLong(Unknown Source)

at java.net.URLConnection.getContentLength(Unknown Source)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:531)

... 5 more

2013-10-18 10:46:11 [iNFO] [sTDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-10-18 10:46:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)

2013-10-18 10:46:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)

2013-10-18 10:46:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)

2013-10-18 10:46:11 [iNFO] [sTDERR] at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)

2013-10-18 10:46:11 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-10-18 10:46:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:261)

2013-10-18 10:46:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

2013-10-18 10:46:11 [iNFO] [sTDERR] ... 3 more

 

 

  • Author

USE THE INSTALLER

I did, i went back and installed via universal to get the logs, the installer didnt work in the first place for the server, that why i went back and used universal

There should always be some form of console log if you run any java application from the command line.

However, if ther eis not we cant really help you beyond saying try reinstalling java?

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

  • Author

There should always be some form of console log if you run any java application from the command line.

However, if ther eis not we cant really help you beyond saying try reinstalling java?

 

i posted the logs a few comments back, i had to install it universal to get them

How could you of possibly gotten the console log of the INSTALLER.

When you are running the uinversal?

If you did you're some sort of wizard.

The downloads are removed, the eaq specifies how to manually install them. Or you could use the installer which will download a proper setup.

Either way, 1.5.2 is old, and there is no legitimate reason to use it anymore.

 

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

  • Author

How could you of possibly gotten the console log of the INSTALLER.

When you are running the uinversal?

If you did you're some sort of wizard.

The downloads are removed, the eaq specifies how to manually install them. Or you could use the installer which will download a proper setup.

Either way, 1.5.2 is old, and there is no legitimate reason to use it anymore.

 

A mod came out for 1.5.2 im making a map with it, but i just Googled one of the files, and download the other from my friend. The problem was, i couldn't locate the scala-library and the bcprov-jdk15on-148 on you're website. I got it to work. But the problem was, the installer for the server couldn't get those two files

All in the EAQ.

Read the EAQ before posting! OR ELSE!

 

This isn't building better software, its trying to grab a place in the commit list of a highly visible github project.

 

www.forgeessentials.com

 

Don't PM me, I don't check this account unless I have to.

I used the 1.5.2 installer for the server and ran into the exact same problem ("Java Exception") pop-up box. However, when I ran the java command from the command-line (Windows 7-64 bit), I got the following:

 

 

C:\Games\MineCraft_1.52\Server>java -d64 -Xms512M -Xmx1G -jar minecraftforge-unversal-1.5.2-7.8.1.738.jar

Exception in thread "main" java.lang.NoClassDefFoundError: ab

        at java.lang.ClassLoader.defineClass1(Native Method)

        at java.lang.ClassLoader.defineClass(Unknown Source)

        at java.security.SecureClassLoader.defineClass(Unknown Source)

        at java.net.URLClassLoader.defineClass(Unknown Source)

        at java.net.URLClassLoader.access$100(Unknown Source)

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

Caused by: java.lang.ClassNotFoundException: ab

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        ... 13 more

 

 

Stuff I maintain: https://minecraft.curseforge.com/members/sinhika/projects

Repositories: https://github.com/Sinhika?tab=repositories

  • 6 years later...

I ran the installer and renamed minecraft_server.1.5.2.jar to minecraft_server.jar, which seemed to help, but now I'm getting a different error.

  

2020-01-15 19:36:14 [INFO] [ForgeModLoader] Forge Mod Loader version 5.2.23.738 for Minecraft 1.5.2 loading
2020-01-15 19:36:14 [INFO] [ForgeModLoader] Java is OpenJDK 64-Bit Server VM, version 1.8.0_232, running on Linux:amd64:4.15.0-74-generic, installed at /usr/lib/jvm/java-8-openjdk-amd64/jre
2020-01-15 19:36:15 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] There was a problem downloading the file bcprov-jdk15on-148.jar automatically. Perhaps you have an environment without internet access. You will need to download the file manually or restart and let it try again

2020-01-15 19:36:15 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/scala-library.jar
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] There was a problem downloading the file scala-library.jar automatically. Perhaps you have an environment without internet access. You will need to download the file manually or restart and let it try again

2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] There were errors during initial FML setup. Some files failed to download or were otherwise corrupted. You will need to manually obtain the following files from these download links and ensure your lib directory is clean.
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/argo-small-3.2.jar
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/asm-all-4.1.jar
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/deobfuscation_data_1.5.2.zip
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/scala-library.jar
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] <===========>
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] The following is the errors that caused the setup to fail. They may help you diagnose and resolve the issue
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] A download error occured
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] A download error occured
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] <<< ==== >>>
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] The following is diagnostic information for developers to review.
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: A download error occured
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:548)
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:165)
        at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
        at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
        at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
        at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)
Caused by: java.io.IOException: Server returned HTTP response code: 500 for URL: http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1950)
        at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1945)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1944)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1514)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:532)
        ... 5 more
Caused by: java.io.IOException: Server returned HTTP response code: 500 for URL: http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1900)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
        at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:3061)
        at java.net.URLConnection.getHeaderFieldLong(URLConnection.java:629)
        at java.net.URLConnection.getContentLengthLong(URLConnection.java:501)
        at java.net.URLConnection.getContentLength(URLConnection.java:485)
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:531)
        ... 5 more
2020-01-15 19:36:15 [SEVERE] [ForgeModLoader] Error details
java.lang.RuntimeException: A download error occured
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:548)
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:165)
        at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
        at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
        at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
        at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)
Caused by: java.io.IOException: Server returned HTTP response code: 500 for URL: http://files.minecraftforge.net/fmllibs/scala-library.jar
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1950)
        at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1945)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1944)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1514)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:532)
        ... 5 more
Caused by: java.io.IOException: Server returned HTTP response code: 500 for URL: http://files.minecraftforge.net/fmllibs/scala-library.jar
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1900)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
        at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:3061)
        at java.net.URLConnection.getHeaderFieldLong(URLConnection.java:629)
        at java.net.URLConnection.getContentLengthLong(URLConnection.java:501)
        at java.net.URLConnection.getContentLength(URLConnection.java:485)
        at cpw.mods.fml.relauncher.RelaunchLibraryManager.downloadFile(RelaunchLibraryManager.java:531)
        ... 5 more
2020-01-15 19:36:15 [INFO] [STDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: A fatal error occured and FML cannot continue
2020-01-15 19:36:15 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2020-01-15 19:36:15 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
2020-01-15 19:36:15 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
2020-01-15 19:36:15 [INFO] [STDERR]     at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1367)
2020-01-15 19:36:15 [INFO] [STDERR] Caused by: java.lang.RuntimeException: A fatal error occured and FML cannot continue
2020-01-15 19:36:15 [INFO] [STDERR]     at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:261)
2020-01-15 19:36:15 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2020-01-15 19:36:15 [INFO] [STDERR]     ... 3 more

 

Edited by Muffinz

Really old Minecraft versions are no longer supported on this forum.

Please update to a modern version of Minecraft to receive support.

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]

 

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