Jump to content
View in the app

A better way to browse. Learn more.
Forge Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
Please read the rules and FAQ before starting a new topic
Currently supported: All versions

forge installer stuck on unpacking packed file akka-actor_2.11-2.3.3.jar.pack.xyz

woodolia
in Support & Bug Reports

Featured Replies

Posted

Trying to set up an RLcraft server to play with my friends, and I am having some trouble installing the server version of forge. 

 

I tried running the command java -Xmx1G -jar forge-1.12.2-14.23.5.2847-installer.jar to try to manually run it, but that did not work

 

Here is the console output: 

Setting up logger: C:\Users\rali7\Downloads\forge-1.12.2-14.23.5.2847-installer.jar.log
java.net.preferIPv4Stack=true
Considering minecraft server jar
Downloading minecraft server version 1.12.2
  ETag: 71728ed3fbd0acd1394bf3ade2649a5c
  MD5:  71728ed3fbd0acd1394bf3ade2649a5c
Considering library net.minecraftforge:forge:1.12.2-14.23.5.2847: Not Downloading {Wrong Side}
Considering library net.minecraft:launchwrapper:1.12
Downloading library net.minecraft:launchwrapper:1.12
Trying unpacked library net.minecraft:launchwrapper:1.12
Considering library org.ow2.asm:asm-all:5.2
Downloading library org.ow2.asm:asm-all:5.2
Trying unpacked library org.ow2.asm:asm-all:5.2
Considering library org.jline:jline:3.5.1
Downloading library org.jline:jline:3.5.1
Trying unpacked library org.jline:jline:3.5.1
Considering library net.java.dev.jna:jna:4.4.0
Downloading library net.java.dev.jna:jna:4.4.0
Trying unpacked library net.java.dev.jna:jna:4.4.0
Considering library com.typesafe.akka:akka-actor_2.11:2.3.3
Downloading library com.typesafe.akka:akka-actor_2.11:2.3.3
Unpacking packed file akka-actor_2.11-2.3.3.jar.pack.xz
  Signed
  Checksum Length: 140942
  Total Length:    2606968
  Temp File:       C:\Users\rali7\AppData\Local\Temp\art196860003303710639.pack
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:564)
        at net.minecraftforge.installer.Java6Gate.main(Java6Gate.java:48)
Caused by: java.lang.NoClassDefFoundError: java/util/jar/Pack200
        at net.minecraftforge.installer.DownloadUtils.unpackLibrary(DownloadUtils.java:253)
        at net.minecraftforge.installer.DownloadUtils.downloadInstalledLibraries(DownloadUtils.java:89)
        at net.minecraftforge.installer.ServerInstall.run(ServerInstall.java:71)
        at net.minecraftforge.installer.InstallerAction.run(InstallerAction.java:43)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:406)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:168)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:54)
        ... 5 more
Caused by: java.lang.ClassNotFoundException: java.util.jar.Pack200
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
        ... 12 more

 

I am aware of a similar forum, https://www.minecraftforge.net/forum/topic/21299-forge-stalled-on-unpacking-packed-file-scala-compiler-2111jarpackxz/ , however that unforunately did not help me. I am happy to provide any further information if needed. Thank you in advance. 

1.12 is no longer supported on these forums due to age.

Please update to a modern version to receive support here.

 

More information on supported versions can be found in the LTS link at the top of every page.

  • Author

I just read the LTS link, can you refer me to anywhere I can get support for 1.12 please?

1.12 is 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]

 

Guest
This topic is now closed to further replies.
https://forums.minecraftforge.net/topic/82985-forge-installer-stuck-on-unpacking-packed-file-akka-actor_211-233jarpackxyz/
Go to topic listing

Important Information

By using this site, you agree to our Terms of Use.

I accept

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.