Dreamhackian

I am having an issue with starting my tekkit (latest) server. I know this has been posted many times but the fix does not work for me. Please help, as this is urgent. This is what the command prompt says: C:\Users\Ian Laor\Desktop\Tekkit Server>java -Xmx3G -Xms2G -jar Tekkit.jar nogui Jun 10, 2015 5:56:05 PM net.minecraft.launchwrapper.LogWrapper log INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLServerTweaker Jun 10, 2015 5:56:05 PM net.minecraft.launchwrapper.LogWrapper log INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLServerTweak er Jun 10, 2015 5:56:05 PM net.minecraft.launchwrapper.LogWrapper log INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLServerTweaker 2015-06-10 17:56:05 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading 2015-06-10 17:56:05 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) 64-Bit Serv er VM, version 1.8.0_45, running on Windows 8.1:amd64:6.3, installed at C:\Progr am Files\Java\jre1.8.0_45 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod codechicken.core.laun ch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod appeng.transformer.Ap pEngCore does not have a MCVersion annotation, it may cause issues with this ver sion of Minecraft 2015-06-10 17:56:05 [INFO] [ForgeModLoader] [AppEng] Core Init 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod calclavia.lib.Calclav iaPluginLoader does not have a MCVersion annotation, it may cause issues with th is version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod codechicken.core.laun ch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issu es with this version of Minecraft 2015-06-10 17:56:05 [INFO] [STDERR] Warning: version of ForgeMultipart-universal -1.6.4-, 1.0.0.250 is newer than request 1.0.0.244 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod cofh.asm.LoadingPlugi n does not have a MCVersion annotation, it may cause issues with this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod mods.immibis.microblo cks.coremod.MicroblocksCoreMod does not have a MCVersion annotation, it may caus e issues with this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod invtweaks.forge.asm.F MLPlugin does not have a MCVersion annotation, it may cause issues with this ver sion of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod logisticspipes.asm.Lo gisticsPipesCoreLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod micdoodle8.mods.micco re.MicdoodlePlugin does not have a MCVersion annotation, it may cause issues wit h this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.N EICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod openmods.OpenModsCore Plugin does not have a MCVersion annotation, it may cause issues with this versi on of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod codechicken.core.laun ch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod mrtjp.projectred.comp atibility.CompatibilityCorePlugin does not have a MCVersion annotation, it may c ause issues with this version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod universalelectricity. core.UELoader does not have a MCVersion annotation, it may cause issues with thi s version of Minecraft 2015-06-10 17:56:05 [WARNING] [ForgeModLoader] The coremod codechicken.core.laun ch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft 2015-06-10 17:56:05 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fm l.common.launcher.FMLInjectionAndSortingTweaker 2015-06-10 17:56:05 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fm l.common.launcher.FMLDeobfTweaker 2015-06-10 17:56:05 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.com mon.launcher.FMLInjectionAndSortingTweaker 2015-06-10 17:56:05 [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) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.j ava:48) at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper. java:17) C:\Users\Ian Laor\Desktop\Tekkit Server>pause Press any key to continue . . .