Voltz failing to start Minecraft

[Arctix]

Launcher Version: 1.0.2.0

Operating System: Lubuntu 12.04

Java Version: Java 7 u7

Antivirus Program:

Description of Problem:

Basically Voltz is downloading all the mods, loading and then failing to start minecraft

Error Messages:

Minecraft failed to start, errors reported in log

Error Log:

2013-01-11 16:57:54 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.7.4.520 for Minecraft 1.4.7 loading

2013-01-11 16:57:54 [FINEST] [ForgeModLoader] All core mods are successfully located

2013-01-11 16:57:54 [FINEST] [ForgeModLoader] Discovering coremods

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Found a candidate coremod CodeChickenCore 0.7.0.1.jar

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Loading coremod CodeChickenCore 0.7.0.1.jar

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Loaded coremod CodeChickenCore 0.7.0.1.jar

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Found a candidate coremod NotEnoughItems 1.4.4.0.jar

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Loading coremod NotEnoughItems 1.4.4.0.jar

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Loaded coremod NotEnoughItems 1.4.4.0.jar

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar

2013-01-11 16:57:55 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Download complete

2013-01-11 16:57:55 [iNFO] [ForgeModLoader] Download complete

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Library file argo-2.25.jar was downloaded and verified successfully

2013-01-11 16:57:55 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2013-01-11 16:57:55 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2013-01-11 16:57:58 [FINEST] [ForgeModLoader] Download complete

2013-01-11 16:57:58 [iNFO] [ForgeModLoader] Download complete

2013-01-11 16:57:58 [FINEST] [ForgeModLoader] Library file guava-12.0.1.jar was downloaded and verified successfully

2013-01-11 16:57:58 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2013-01-11 16:57:58 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2013-01-11 16:57:59 [FINEST] [ForgeModLoader] Download complete

2013-01-11 16:57:59 [iNFO] [ForgeModLoader] Download complete

2013-01-11 16:57:59 [FINEST] [ForgeModLoader] Library file asm-all-4.0.jar was downloaded and verified successfully

2013-01-11 16:57:59 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-147.jar

2013-01-11 16:57:59 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-147.jar

2013-01-11 16:58:01 [FINEST] [ForgeModLoader] Download complete

2013-01-11 16:58:01 [iNFO] [ForgeModLoader] Download complete

2013-01-11 16:58:01 [FINEST] [ForgeModLoader] Library file bcprov-jdk15on-147.jar was downloaded and verified successfully

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Running coremod plugins

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin

2013-01-11 16:58:03 [iNFO] [ForgeModLoader] Found valid fingerprint for Minecraft Forge. Certificate fingerprint de4cf8a3f3bc15635810044c39240bf96804ea7d

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Running coremod plugin CodeChickenCorePlugin

2013-01-11 16:58:03 [iNFO] [sTDOUT] Adding Accesstransformer map: codechickencore_at.cfg

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Coremod plugin CodeChickenCorePlugin run successfully

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Running coremod plugin NEICorePlugin

2013-01-11 16:58:03 [iNFO] [sTDOUT] Adding Accesstransformer map: nei_at.cfg

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Coremod plugin NEICorePlugin run successfully

2013-01-11 16:58:03 [FINEST] [ForgeModLoader] Validating minecraft

2013-01-11 16:58:06 [FINEST] [ForgeModLoader] Minecraft validated, launching...

2013-01-11 16:58:09 [iNFO] [sTDOUT] Inserted super call into avz.c

2013-01-11 16:58:09 [iNFO] [sTDOUT] avf was overriden from NotEnoughItems 1.4.4.0.jar

2013-01-11 16:58:11 [iNFO] [sTDERR] Exception thrown while initializing MineCraft.

2013-01-11 16:58:11 [iNFO] [sTDERR] java.lang.RuntimeException: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindClassException: java.lang.ClassNotFoundException: net.minecraft.Launcher

2013-01-11 16:58:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:269)

2013-01-11 16:58:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)

2013-01-11 16:58:11 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)

2013-01-11 16:58:11 [iNFO] [sTDERR] at org.spoutcraft.launcher.MinecraftAppletEnglober.init(MinecraftAppletEnglober.java:110)

2013-01-11 16:58:11 [iNFO] [sTDERR] at org.spoutcraft.launcher.gui.LauncherFrame.runGame(LauncherFrame.java:121)

2013-01-11 16:58:11 [iNFO] [sTDERR] at org.spoutcraft.launcher.gui.LoginForm.runGame(LoginForm.java:907)

2013-01-11 16:58:11 [iNFO] [sTDERR] at org.spoutcraft.launcher.gui.LoginForm$3.done(LoginForm.java:841)

2013-01-11 16:58:11 [iNFO] [sTDERR] at javax.swing.SwingWorker$5.run(SwingWorker.java:731)

2013-01-11 16:58:11 [iNFO] [sTDERR] at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(SwingWorker.java:877)

2013-01-11 16:58:11 [iNFO] [sTDERR] at sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)

2013-01-11 16:58:11 [iNFO] [sTDERR] at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(SwingWorker.java:887)

2013-01-11 16:58:11 [iNFO] [sTDERR] at javax.swing.Timer.fireActionPerformed(Timer.java:313)

2013-01-11 16:58:11 [iNFO] [sTDERR] at javax.swing.Timer$DoPostEvent.run(Timer.java:244)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:670)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventQueue.access$400(EventQueue.java:96)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventQueue$2.run(EventQueue.java:631)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventQueue$2.run(EventQueue.java:629)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventQueue.dispatchEvent(EventQueue.java:640)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)

2013-01-11 16:58:11 [iNFO] [sTDERR] Caused by: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindClassException: java.lang.ClassNotFoundException: net.minecraft.Launcher

2013-01-11 16:58:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.ReflectionHelper.getClass(ReflectionHelper.java:159)

2013-01-11 16:58:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:254)

2013-01-11 16:58:11 [iNFO] [sTDERR] ... 26 more

2013-01-11 16:58:11 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: net.minecraft.Launcher

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(URLClassLoader.java:217)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.net.URLClassLoader.findClass(URLClassLoader.java:205)

2013-01-11 16:58:11 [iNFO] [sTDERR] at org.spoutcraft.launcher.MinecraftClassLoader.findClass(MinecraftClassLoader.java:64)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:321)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:266)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.lang.Class.forName0(Native Method)

2013-01-11 16:58:11 [iNFO] [sTDERR] at java.lang.Class.forName(Class.java:264)

2013-01-11 16:58:11 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.ReflectionHelper.getClass(ReflectionHelper.java:151)

2013-01-11 16:58:11 [iNFO] [sTDERR] ... 27 more

[Nictolite]

Same

[Markarthian]

Forge couldn't locate the minecraft launch class, try redownloading.