I installed my minecraft and reinstalled it and nothing seems to work... What happens is I open up my minecraft and click play on 1.8 and it works perfect, but when I change the version to forge 1.6.4 (9.11.1.965) the launcher launches the game and nothing pops up, not minecraft or the launcher so I have no idea whats going on... I have no mods installed im using a laptop and I have the crash report right here
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] All fundamental core mods are successfully located
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Discovering coremods
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.remove(ArrayList.java:865)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
[quote=Kade995;/members/Kade995;/forums/support/modded-client-support/2311222-forge-startup-crash?comment=1]I installed my minecraft and reinstalled it and nothing seems to work... What happens is I open up my minecraft and click play on 1.8 and it works perfect, but when I change the version to forge 1.6.4 (9.11.1.965) the launcher launches the game and nothing pops up, not minecraft or the launcher so I have no idea whats going on... I have no mods installed im using a laptop and I have the crash report right here
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] All fundamental core mods are successfully located
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Discovering coremods
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.remove(ArrayList.java:865)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
That could be one of the reasons... but I did have this working on my laptop before i factory reset it. I think I might try updating my laptop to 8.1 again and update everything to see if it is because of the updates.
That could be one of the reasons... but I did have this working on my laptop before i factory reset it. I think I might try updating my laptop to 8.1 again and update everything to see if it is because of the updates.
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] All fundamental core mods are successfully located
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Discovering coremods
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.remove(ArrayList.java:865)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLCorePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Instantiating coremod class FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Enqueued coremod FMLForgePlugin
2014-12-24 15:32:40 [FINE] [ForgeModLoader] All fundamental core mods are successfully located
2014-12-24 15:32:40 [FINE] [ForgeModLoader] Discovering coremods
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2014-12-24 15:32:40 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-12-24 15:32:40 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.remove(ArrayList.java:865)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
P.S. I also suffered it unexpectedly.
That could be one of the reasons... but I did have this working on my laptop before i factory reset it. I think I might try updating my laptop to 8.1 again and update everything to see if it is because of the updates.
Ok. Does factory reset solve the problem?
Then does it solve the problem if you update Java?