Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256M; support was removed in 8.0
Mar 20, 2018 9:23:21 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLServerTweaker
Mar 20, 2018 9:23:21 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLServerTweaker
Mar 20, 2018 9:23:21 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLServerTweaker
2018-03-20 21:23:21 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading
2018-03-20 21:23:21 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_112, running on Linux:amd64:3.14.32-xxxx-grs-ipv6-64, installed at /home/gs/gs/bin/java8
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod net.minecraftforge.lex.sortfix.CorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod cofh.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod openblocks.OpenBlocksCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod openmods.OpenModsCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod squeek.spiceoflife.asm.ASMPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod tconstruct.preloader.TConstructLoaderContainer does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [INFO] [TCon-Preloader] Scalpel. Suction. Lumber axe. CLEAR! *zap*
2018-03-20 21:23:21 [INFO] [TCon-Preloader] Constructing preloader (Modules: [tconstruct.preloader.AccessTransformers, tconstruct.preloader.ASMInterfaceRepair])
2018-03-20 21:23:21 [INFO] [TCon-Preloader] Found a properties file. Attempting load...
2018-03-20 21:23:21 [INFO] [TCon-Preloader] Loaded properties successfully. Using specified settings.
2018-03-20 21:23:21 [WARNING] [ForgeModLoader] The coremod appeng.transformer.AppEngCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2018-03-20 21:23:21 [INFO] [ForgeModLoader] [AppEng] Core Init
2018-03-20 21:23:21 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2018-03-20 21:23:21 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2018-03-20 21:23:21 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2018-03-20 21:23:21 [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)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:48)
        at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:17)