chudders1231 Posted December 9, 2014 Posted December 9, 2014 Hello my name is chad and i am creating a post because i am recently making a minecraft modpack and would like to create a server for it. I had the 1.6.4 recommended installer and i installed this and i ran the minecraft forge jar file and it outputted the error: 2014-12-09 18:35:23 [iNFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading 2014-12-09 18:35:23 [iNFO] [ForgeModLoader] Java is Java HotSpot Client VM, version 1.8.0_25, running on Windows 7:x86:6.1, installed at C:\Program Files (x86)\Java\jre1.8.0_25 2014-12-09 18:35:23 [FINE] [ForgeModLoader] Java classpath at launch is C:\Users\Chad\Desktop\Technomancy Server\minecraftforge-universal-1.6.4-9.11.1.965-v164-pregradle.jar 2014-12-09 18:35:23 [FINE] [ForgeModLoader] Java library path at launch is C:\Program Files (x86)\Java\jre1.8.0_25\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\nodejs\;C:\Users\Chad\AppData\Local\.meteor;C:\Users\Chad\AppData\Roaming\npm;. 2014-12-09 18:35:23 [FINE] [ForgeModLoader] Enabling runtime deobfuscation 2014-12-09 18:35:23 [FINE] [ForgeModLoader] Instantiating coremod class FMLCorePlugin 2014-12-09 18:35:24 [FINE] [ForgeModLoader] Enqueued coremod FMLCorePlugin 2014-12-09 18:35:24 [FINE] [ForgeModLoader] Instantiating coremod class FMLForgePlugin 2014-12-09 18:35:24 [FINE] [ForgeModLoader] Enqueued coremod FMLForgePlugin 2014-12-09 18:35:24 [FINE] [ForgeModLoader] All fundamental core mods are successfully located 2014-12-09 18:35:24 [FINE] [ForgeModLoader] Discovering coremods 2014-12-09 18:35:24 [iNFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker 2014-12-09 18:35:24 [iNFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker 2014-12-09 18:35:24 [iNFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker 2014-12-09 18:35:24 [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.java:48) at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:17) i googled this and i couldn't find an answer that can help me, i have tried alot of different solutions that just simply havent worked! If you can and are willing to help me then thank you in advanced : ;D Quote
robin4002 Posted December 9, 2014 Posted December 9, 2014 read the EAQ : java.lang.ConcurrentModificationException before Minecraft loads: Update to build 1217 or above, or install this mod: http://t.co/9olGYnwZBi (it's by Lex, you can trust it) Quote
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