Hesas

Server crash after error: 2012-09-24 22:27:09 [sEVERE] at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819) 2012-09-24 22:27:09 [sEVERE] at java.util.ArrayList$Itr.next(ArrayList.java:791) 2012-09-24 22:27:09 [sEVERE] at net.minecraft.server.World.getTileEntity(World.java:1644) 2012-09-24 22:27:09 [sEVERE] at net.minecraft.server.WorldServer.getTileEntity(WorldServer.java:45) 2012-09-24 22:27:09 [sEVERE] at buildcraft.transport.PipeTransportLiquids.canReceiveLiquid(PipeTransportLiquids.java:47) 2012-09-24 22:27:09 [sEVERE] at buildcraft.transport.PipeTransportLiquids.computeOutputs(PipeTransportLiquids.java:181) 2012-09-24 22:27:09 [sEVERE] at buildcraft.transport.PipeTransportLiquids.moveLiquids(PipeTransportLiquids.java:114) 2012-09-24 22:27:09 [sEVERE] at buildcraft.transport.PipeTransportLiquids.updateEntity(PipeTransportLiquids.java:55) 2012-09-24 22:27:09 [sEVERE] at buildcraft.transport.Pipe.updateEntity(Pipe.java:106) 2012-09-24 22:27:09 [sEVERE] at buildcraft.transport.TileGenericPipe.q_(TileGenericPipe.java:156) 2012-09-24 22:27:09 [sEVERE] at net.minecraft.server.World.tickEntities(World.java:1190) 2012-09-24 22:27:09 [sEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569) 2012-09-24 22:27:09 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467) 2012-09-24 22:27:09 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) 2012-09-24 22:27:09 [sEVERE] Unexpected exception java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819) at java.util.ArrayList$Itr.next(ArrayList.java:791) at net.minecraft.server.World.getTileEntity(World.java:1644) at net.minecraft.server.WorldServer.getTileEntity(WorldServer.java:45) at buildcraft.transport.PipeTransportLiquids.canReceiveLiquid(PipeTransportLiquids.java:47) at buildcraft.transport.PipeTransportLiquids.computeOutputs(PipeTransportLiquids.java:181) at buildcraft.transport.PipeTransportLiquids.moveLiquids(PipeTransportLiquids.java:114) at buildcraft.transport.PipeTransportLiquids.updateEntity(PipeTransportLiquids.java:55) at buildcraft.transport.Pipe.updateEntity(Pipe.java:106) at buildcraft.transport.TileGenericPipe.q_(TileGenericPipe.java:156) at net.minecraft.server.World.tickEntities(World.java:1190) at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467) at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) What i need to do?