[21:34:48] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLServerTweaker
[21:34:48] [main/INFO]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLServerTweaker
[21:34:48] [main/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLServerTweaker
[21:34:48] [main/INFO]: Forge Mod Loader version 7.10.25.1207 for Minecraft 1.7.10 loading
[21:34:49] [main/INFO]: Java is Java HotSpot(TM) Client VM, version 1.8.0_60, running on Windows 8.1:x86:6.3, installed at C:\Program Files (x86)\Java\jre1.8.0_60
[21:34:49] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[21:34:49] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[21:34:49] [main/INFO]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[21:34:49] [main/ERROR]: Unable to launch
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.8.0_60]
	at java.util.ArrayList$Itr.remove(Unknown Source) ~[?:1.8.0_60]
	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:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_60]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_60]
	at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:43) [cauldron-1.7.10-1.1207.01.198-server.jar:git-Cauldron-MCPC-Plus-1.7.10-1.1207.01.198]
	at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12) [cauldron-1.7.10-1.1207.01.198-server.jar:git-Cauldron-MCPC-Plus-1.7.10-1.1207.01.198]