Error when trying to install any modpack

[maxcmiller]

Whenever I try to click the "Install" button for a modpack, the loading bar shows for a brief moment and then nothing happens. When I open the console, I see the following stack trace each time:

[B#301] java.lang.NoSuchMethodError: org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V
[B#301]     at org.eclipse.aether.internal.impl.slf4j.Slf4jLoggerFactory$Slf4jLoggerEx.debug(Slf4jLoggerFactory.java:167)
[B#301]     at org.eclipse.aether.internal.impl.DefaultLocalRepositoryProvider.newLocalRepositoryManager(DefaultLocalRepositoryProvider.java:116)
[B#301]     at org.eclipse.aether.internal.impl.DefaultRepositorySystem.newLocalRepositoryManager(DefaultRepositorySystem.java:421)
[B#301]     at net.technicpack.utilslib.maven.MavenConnector.<init>(MavenConnector.java:67)
[B#301]     at net.technicpack.minecraftcore.install.tasks.HandleVersionFileTask.<init>(HandleVersionFileTask.java:55)
[B#301]     at net.technicpack.launcher.launch.Installer.buildTasksQueue(Installer.java:252)
[B#301]     at net.technicpack.launcher.launch.Installer$1.run(Installer.java:111)
[B#301]     at java.lang.Thread.run(Thread.java:745)
[B#301] Unhandled Exception in Thread[Thread-77,6,main]

I'm using OS X Yosemite 10.10.3 and Oracle's Java version 1.8.0_45, with both the JRE and JDK installed. Also, I have the latest Technic Launcher for OS X downloaded from the website.

I have tried deleting the technic folder and reinstalling multiple times, with no luck.

[CannibalVox]

I apologize for not responding sooner- this build is a little out of date, can you show me a log from a more recent build?

[maxcmiller]

Sure - I downloaded the latest launcher from the website (v4.308), and I'm getting a very similar error.

[B#308] java.lang.NoSuchMethodError: org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V
[B#308]     at org.eclipse.aether.internal.impl.slf4j.Slf4jLoggerFactory$Slf4jLoggerEx.debug(Slf4jLoggerFactory.java:167)
[B#308]     at org.eclipse.aether.internal.impl.DefaultLocalRepositoryProvider.newLocalRepositoryManager(DefaultLocalRepositoryProvider.java:116)
[B#308]     at org.eclipse.aether.internal.impl.DefaultRepositorySystem.newLocalRepositoryManager(DefaultRepositorySystem.java:421)
[B#308]     at net.technicpack.utilslib.maven.MavenConnector.<init>(MavenConnector.java:67)
[B#308]     at net.technicpack.minecraftcore.install.tasks.HandleVersionFileTask.<init>(HandleVersionFileTask.java:55)
[B#308]     at net.technicpack.launcher.launch.Installer.buildTasksQueue(Installer.java:283)
[B#308]     at net.technicpack.launcher.launch.Installer$1.run(Installer.java:115)
[B#308]     at java.lang.Thread.run(Thread.java:745)
[B#308] Unhandled Exception in Thread[Thread-36,6,main]

[fiatalur2004]

no aplication

[CannibalVox]

Sorry, hi, I'm having a hard time keeping up.

Go to: %appdata%.technic\assets\launcher on your system. Is there an aether-dep.jar there?

[CannibalVox]

Gosh, you already told me you were on OSX, I'm so sorry. ~/Library/Application Support/technic/assets/launcher

[maxcmiller]

No problem - yep, aether-dep.jar is there.

[CannibalVox]

If you delete it and restart the launcher, does it redownload, and does that fix it?

[maxcmiller]

I deleted the technic folder and started the launcher, the files did redownload, but the issue persists.

[Hucinec]

Launcher Build: 0

Selected Pack: Vanilla

Stack Trace: Exception: IndexOutOfBoundsException Message: Index: 0, Size: 0 Trace: java.util.ArrayList.rangeCheck(Unknown Source) java.util.ArrayList.get(Unknown Source) org.spoutcraft.launcher.skin.NewsComponent.setupArticles(NewsComponent.java:60) org.spoutcraft.launcher.skin.NewsComponent.loadArticles(NewsComponent.java:46) org.spoutcraft.launcher.Launcher$2.run(Launcher.java:105)

System Information: Operating System: Windows 8.1 Operating System Version: 6.3 Operating System Architecture: amd64 Java version: 1.8.0_45 64 bit Total Memory: 155 MB Max Memory: 1806 MB Memory Free: 82 MB CPU Cores: 4

[xsznix]

I had the same issue as well. Do you have anything inside /Library/Java/Extensions? Something in there may be causing the wrong version of slf4j to be loaded. I just moved everything inside that folder somewhere else, and installing modpacks worked.

[maxcmiller]

@xsznix There were several .jar files in /Library/Java/Extensions, I deleted them all. This didn't fix the issue unfortunately.

[xsznix]

Try ~/Library/Java/Extensions?

[icninja]

Hi, im still having this issue today; im unable to download any packs. Im using a mac with the latest version of Java, and still having issues. Upon investigating the logs, i discovered that the application is only receiving 256mb of ram, where it should be getting at least 512. Whats the best way to fix this?

[WIREDEED]

im having the same issue here is the promt [B#554] java.lang.NoClassDefFoundError: org/eclipse/aether/impl/DefaultServiceLocator$ErrorHandler [B#554] at net.technicpack.minecraftcore.install.tasks.HandleVersionFileTask.(HandleVersionFileTask.java:60) [B#554] at net.technicpack.launcher.launch.Installer.buildTasksQueue(Installer.java:282) [B#554] at net.technicpack.launcher.launch.Installer$1.run(Installer.java:114) [B#554] at java.lang.Thread.run(Unknown Source) [B#554] Caused by: java.lang.ClassNotFoundException: org.eclipse.aether.impl.DefaultServiceLocator$ErrorHandler [B#554] at java.net.URLClassLoader.findClass(Unknown Source) [B#554] at com.regexlab.j2e.Jar2ExeClassLoader.findClass(Unknown Source) [B#554] at java.lang.ClassLoader.loadClass(Unknown Source) [B#554] at java.lang.ClassLoader.loadClass(Unknown Source) [B#554] ... 4 more [B#554] Unhandled Exception in Thread[Thread-67,6,main] there is no aether-dep.jar in the %appdata%.technic\assets\launcher

[WIREDEED]

please help

[Pyker]

@WIREDEED 1) Don't hijack an old issue that's irrelevant to your case; 2) Don't use a cracked launcher.