GregTech Rus Minecraft Сервер

examined later for regular @Mod instances
2014-08-28 20:37:34 [FINE] [ForgeModLoader] Instantiating coremod class OpenModsCorePlugin
2014-08-28 20:37:34 [WARNING] [ForgeModLoader] The coremod openmods.OpenModsCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2014-08-28 20:37:34 [FINE] [ForgeModLoader] Enqueued coremod OpenModsCorePlugin
2014-08-28 20:37:34 [FINE] [ForgeModLoader] Examining for coremod candidacy OptiFine_1.6.4_HD_U_C8.jar
2014-08-28 20:37:34 [INFO] [ForgeModLoader] Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.6.4_HD_U_C8.jar
2014-08-28 20:37:34 [FINE] [ForgeModLoader] Examining for coremod candidacy Railcraft_1.6.4-8.3.2.0.jar
2014-08-28 20:37:34 [FINE] [ForgeModLoader] Not found coremod data in Railcraft_1.6.4-8.3.2.0.jar
2014-08-28 20:37:34 [FINE] [ForgeModLoader] Examining for coremod candidacy redlogic-57.2.8.jar
2014-08-28 20:37:34 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-08-28 20:37:34 [INFO] [ForgeModLoader] Loading tweak class name optifine.OptiFineForgeTweaker
2014-08-28 20:37:34 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2014-08-28 20:37:34 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-08-28 20:37:34 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.remove(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

краш не создается. папку удалял, выделено 2,5 Гб памяти

Проблема появилась в среду вечером