[15:39:26] [Thread-12/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[15:39:26] [Thread-12/INFO]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[15:39:26] [Thread-12/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[15:39:26] [Thread-12/INFO]: Forge Mod Loader version 7.10.25.1208 for Minecraft 1.7.10 loading
[15:39:26] [Thread-12/INFO]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_20, running on Windows 8.1:amd64:6.3, installed at C:\Program Files\Java\jre1.8.0_20
[15:39:26] [Thread-12/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[15:39:26] [Thread-12/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[15:39:26] [Thread-12/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[15:39:26] [Thread-12/ERROR]: Unable to launch
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.8.0_20]
	at java.util.ArrayList$Itr.remove(Unknown Source) ~[?:1.8.0_20]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:118) [launchwrapper-1.11.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_20]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_20]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_20]
	at net.launcher.components.Game$4.run(Game.java:240) [JavaApplication2.jar:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_20]