Severe Error causing MC to fail on launch

aNarwhalEmpire · July 10, 2013

I'm currently receiving a severe error when trying to launch minecraft 1.6.2 with Forge version 9.10.0.784. I have tried using the Installer and installing manually with the universal as well as uninstalling minecraft and reinstalling it. However I keep receiving this error. I have searched for a solution but I can't seem to find it. There are no mods installed and I can't even get an error log from it. I am also receiving this error when I use Forge version 9.10.0.789. If anyone has any ideas on how to fix this it will be greatly appreciated.

This is the error I get when I use the Installer:

Reveal hidden contents

Launcher 1.0.9 (through bootstrap 4) started on windows...

Current time is Jul 10, 2013 2:07:30 PM

System.getProperty('os.name') == 'Windows 7'

System.getProperty('os.version') == '6.1'

System.getProperty('os.arch') == 'x86'

System.getProperty('java.version') == '1.6.0_23'

System.getProperty('java.vendor') == 'Sun Microsystems Inc.'

System.getProperty('sun.arch.data.model') == '32'

Loaded 2 profile(s); selected '(Default)'

Trying to log in...

Logging in with access token

Logged in successfully

Delta time to compare resources: 595 ms

Download job 'Resources' skipped as there are no files to download

Job 'Resources' finished successfully

Trying to log in...

Logging in with username & password

Logged in successfully

Getting syncinfo for selected version

Queueing library & version downloads

Download job 'Version & Libraries' started (8 threads, 25 files)

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\minecraftforge\minecraftforge\9.10.0.784\minecraftforge-9.10.0.784.jar for job 'Version & Libraries': Didn't have etag so assuming our copy is good

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\lwjgl-platform-2.9.0-natives-windows.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries': Downloaded successfully and etag matched

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\versions\1.6.2-Forge9.10.0.784\1.6.2-Forge9.10.0.784.jar for job 'Version & Libraries': Couldn't connect to server (responded with 403) but have local file, assuming it's good

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar for job 'Version & Libraries': Downloaded successfully and etag matched

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.3\launchwrapper-1.3.jar for job 'Version & Libraries': Downloaded successfully and etag matched

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2\scala-library-2.10.2.jar for job 'Version & Libraries': Didn't have etag so assuming our copy is good

Finished downloading C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2\scala-compiler-2.10.2.jar for job 'Version & Libraries': Didn't have etag so assuming our copy is good

Job 'Version & Libraries' finished successfully

Launching game

Looking for old natives to clean up...

Unpacking natives to C:\Users\Jpeers\AppData\Roaming\.minecraft\versions\1.6.2-Forge9.10.0.784\1.6.2-Forge9.10.0.784-natives-195077762528597

Launching in C:\Users\Jpeers\AppData\Roaming\.minecraft

Running C:\Program Files (x86)\Java\jre6\bin\javaw.exe -Xmx512M -Djava.library.path=C:\Users\Jpeers\AppData\Roaming\.minecraft\versions\1.6.2-Forge9.10.0.784\1.6.2-Forge9.10.0.784-natives-195077762528597 -cp C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\minecraftforge\minecraftforge\9.10.0.784\minecraftforge-9.10.0.784.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.3\launchwrapper-1.3.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2\scala-library-2.10.2.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2\scala-compiler-2.10.2.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Users\Jpeers\AppData\Roaming\.minecraft\versions\1.6.2-Forge9.10.0.784\1.6.2-Forge9.10.0.784.jar net.minecraft.launchwrapper.Launch --username elementalwolf92 --session token:a424cc5fd8cd43f990e6540388a09267:9df3ccade75540688424e25fa4ea3c15 --version 1.6.2-Forge9.10.0.784 --gameDir C:\Users\Jpeers\AppData\Roaming\.minecraft --assetsDir C:\Users\Jpeers\AppData\Roaming\.minecraft\assets --tweakClass cpw.mods.fml.common.launcher.FMLTweaker

---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

---- (We'll do this automatically later ) ----

Client> Jul 10, 2013 2:07:47 PM net.minecraft.launchwrapper.LogWrapper log

Client> INFO: Using tweak class name cpw.mods.fml.common.launcher.FMLTweaker

Client> Jul 10, 2013 2:07:47 PM net.minecraft.launchwrapper.LogWrapper log

Client> SEVERE: Unable to launch

Client> java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker

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

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

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

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

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

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

Client> at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:99)

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

Client> at java.lang.Class.forName0(Native Method)

Client> at java.lang.Class.forName(Unknown Source)

Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:49)

Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

Game ended with no troubles detected (exit code 0)

Deleting C:\Users\Jpeers\AppData\Roaming\.minecraft\versions\1.6.2-Forge9.10.0.784\1.6.2-Forge9.10.0.784-natives-195077762528597

This is the error I get when I install it manually:

Reveal hidden contents

Launcher 1.0.9 (through bootstrap 4) started on windows...

Current time is Jul 10, 2013 2:03:07 PM

System.getProperty('os.name') == 'Windows 7'

System.getProperty('os.version') == '6.1'

System.getProperty('os.arch') == 'x86'

System.getProperty('java.version') == '1.6.0_23'

System.getProperty('java.vendor') == 'Sun Microsystems Inc.'

System.getProperty('sun.arch.data.model') == '32'

Loaded 2 profile(s); selected 'Forge'

Delta time to compare resources: 616 ms