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scala-library.jar ERROR

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Hello Forge Creators and readers of all ages, I have a bug that I Must Ask about. When i load up Forge everything goes good, Un-till it loads the scala-library.jar file.. It says Error at 8% so i went to the log file it told me to read and I went to the link it said in the log for scala-library.jar and when i went there it started downloading on my web browser but at a few KB it failed saying network error.. I think this might be a broken forge link... Can you guys please fix it... Thanks!


Heres the ForgeModLoader-client-0 :


2013-05-04 14:15:14 [iNFO] [ForgeModLoader] Forge Mod Loader version for Minecraft 1.5.2 loading

2013-05-04 14:15:14 [iNFO] [ForgeModLoader] Java is Java HotSpot Client VM, version 1.7.0_04, running on Windows 7:x86:6.1, installed at C:\Program Files (x86)\Java\jre7

2013-05-04 14:15:14 [FINE] [ForgeModLoader] Java classpath at launch is /C:/Users/hartling family/AppData/Local/Temp/e4j105D.tmp_dir/MinecraftSP.jar

2013-05-04 14:15:14 [FINE] [ForgeModLoader] Java library path at launch is C:\Windows\SysWOW64;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\QuickTime\QTSystem\;c:\program files (x86)\java\jre7\bin;.

2013-05-04 14:15:14 [FINE] [ForgeModLoader] Enabling runtime deobfuscation

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] All core mods are successfully located

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] Discovering coremods

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] Found library file argo-small-3.2.jar present and correct in lib dir

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] Found library file guava-14.0-rc3.jar present and correct in lib dir

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] Found library file asm-all-4.1.jar present and correct in lib dir

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] Found library file bcprov-jdk15on-148.jar present and correct in lib dir

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] Found library file deobfuscation_data_1.5.2.zip present and correct in lib dir

2013-05-04 14:15:14 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/scala-library.jar

2013-05-04 14:15:14 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/scala-library.jar

2013-05-04 14:17:16 [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.

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/argo-small-3.2.jar

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/asm-all-4.1.jar

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/deobfuscation_data_1.5.2.zip

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] *** Download http://files.minecraftforge.net/fmllibs/scala-library.jar

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] <===========>

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] The following is the errors that caused the setup to fail. They may help you diagnose and resolve the issue

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] java.net.SocketException: Connection reset

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] <<< ==== >>>

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] The following is diagnostic information for developers to review.

2013-05-04 14:17:16 [sEVERE] [ForgeModLoader] Error details

java.lang.RuntimeException: java.net.SocketException: Connection reset

at cpw.mods.fml.relauncher.RelaunchLibraryManager.performDownload(RelaunchLibraryManager.java:597)

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

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.relaunchApplet(FMLRelauncher.java:259)

at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:229)

at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)

at net.minecraft.Launcher.replace(Launcher.java:153)

at net.minecraft.Launcher$1.run(Launcher.java:94)

Caused by: java.net.SocketException: Connection reset

at java.net.SocketInputStream.read(Unknown Source)

at java.net.SocketInputStream.read(Unknown Source)

at java.io.BufferedInputStream.fill(Unknown Source)

at java.io.BufferedInputStream.read1(Unknown Source)

at java.io.BufferedInputStream.read(Unknown Source)

at sun.net.www.MeteredStream.read(Unknown Source)

at java.io.FilterInputStream.read(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(Unknown Source)

at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(Unknown Source)

at cpw.mods.fml.relauncher.RelaunchLibraryManager.performDownload(RelaunchLibraryManager.java:575)

... 8 more

2013-05-04 14:17:28 [iNFO] [sTDERR] Exception in thread "Thread-2" java.lang.RuntimeException: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-05-04 14:17:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)

2013-05-04 14:17:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:259)

2013-05-04 14:17:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:229)

2013-05-04 14:17:28 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)

2013-05-04 14:17:28 [iNFO] [sTDERR] at net.minecraft.Launcher.replace(Launcher.java:153)

2013-05-04 14:17:28 [iNFO] [sTDERR] at net.minecraft.Launcher$1.run(Launcher.java:94)

2013-05-04 14:17:28 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: A fatal error occured and FML cannot continue

2013-05-04 14:17:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:261)

2013-05-04 14:17:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)

2013-05-04 14:17:28 [iNFO] [sTDERR] ... 5 more


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  • 2 weeks later...

Then there is an issue with your internet connection/browser.

Try with a different downloader.

Clear your cache, etc..


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

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Try to use a software like free download manager, or maybe opera works. i had the same probleme but after some errors (server connection) the software have finally download the zip file, with some files corrupted but not the scala-library 


This is the link you need http://files.minecraftforge.net/fmllibs/fml_libs15.zip (if you don't see in the eaq)

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  • 6 years later...

Please don't necro ancient threads.

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.


Logs (Most issues require logs to diagnose):


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:

  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.






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:


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:


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:


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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