My server ran better when it was using java 7 now it wont even start and me and my friends have waited 2 days and ive tried running it vanilla ive tried everything. plz help :/ (ran it first with direwolf20 pack 1.6.4 v1.0.23) The error message i get is this 21.03 13:52:47 [Multicraft] Server stopped 21.03 13:52:47 [Multicraft] Server shut down 21.03 13:52:21 [Server] INFO /run.sh: line 31: 18061 Killed /monitor.sh "$PID" "$USER" 21.03 13:52:21 [Multicraft] Skipped 3 lines due to rate limit (30/s) 21.03 13:52:19 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 21.03 13:52:19 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 21.03 13:52:19 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 21.03 13:52:19 [Server] INFO at net.minecraft.launchwrapper.Launch.main(Launch.java:27) 21.03 13:52:19 [Server] INFO at net.minecraft.launchwrapper.Launch.launch(Launch.java:114) 21.03 13:52:19 [Server] INFO at java.util.ArrayList$Itr.remove(ArrayList.java:865) 21.03 13:52:19 [Server] INFO at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) 21.03 13:52:19 [Server] INFO java.util.ConcurrentModificationException 21.03 13:52:19 [Server] SEVERE Unable to launch 21.03 13:52:19 [Server] INFO Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker 21.03 13:52:19 [Server] INFO Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker 21.03 13:52:19 [Server] INFO Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
