minecraft launcher doesnt starts the game when it should be (forge)

#1 Feb 3, 2015

sargentlalo

Coal Miner
Join Date: 1/18/2012
Posts: 113
Minecraft: sargentlalo
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hello and thanks for coming to my thread i have the issue that when my minecraft when its with the 1.7.2 forge version installed the game should open but instead it doesnt

I've tried 2 things such as:

-reinstalling minecraft like 100 times.

-updating java.

heres the error log that the launcher sends you (its pretty short)

 

[01:57:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[01:57:09] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[01:57:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[01:57:09] [main/INFO] [FML]: Forge Mod Loader version 7.2.211.1121 for Minecraft 1.7.2 loading
[01:57:09] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 7:amd64:6.1, installed at D:\mamamamammaincrah\runtime\jre-x64\1.8.0_25
[01:57:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[01:57:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[01:57:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[01:57:09] [main/ERROR] [LaunchWrapper]: Unable to launch
java.util.ConcurrentModificationException
 at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) ~[?:1.8.0_25]
 at java.util.ArrayList$Itr.remove(ArrayList.java:865) ~[?:1.8.0_25]
 at net.minecraft.launchwrapper.Launch.launch(Launch.java:117) [launchwrapper-1.9.jar:?]
 at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

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