SchweizerAtze

Hi everyone, i`ve got an big Problem with my Multiplayer-Server. I Ran the Server a Week with about 10-20 Players. Everything went good. Then after a while someone did Build a Forcefield into to a Quarry, because there are Plugins like Logblock and Towny the Server crashed. I Figured out the Problem and forbid my Users to Build a ForceField into a Quarry. Then everything went well for about 3-4 Hours and know The Server crashes as soon someone places a Quarry and start it. For the First i fobid quarrys at all with WorldGuard, but i know tested with opping User like [buildCraft ¨and this Stuff. The Problem is still here. But then if i Restart the Server, he only crashes if a Player gets naer the Quarry or i connect (Standing right in front of it) This is the Error i get at the Console, plz help me -.- 2012-11-10 20:55:07 [iNFO] Sending serverside check to: SchweizerAtze 2012-11-10 20:55:08 [sEVERE] java.lang.NullPointerException 2012-11-10 20:55:08 [sEVERE] at org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:98) 2012-11-10 20:55:08 [sEVERE] at buildcraft.factory.TileQuarry.doWork(TileQuarry.java:210) 2012-11-10 20:55:08 [sEVERE] at buildcraft.api.PowerProvider.update(PowerProvider.java:50) 2012-11-10 20:55:08 [sEVERE] at buildcraft.core.TileBuildCraft.q_(TileBuildCraft.java:54) 2012-11-10 20:55:08 [sEVERE] at buildcraft.factory.TileQuarry.q_(TileQuarry.java:136) 2012-11-10 20:55:08 [sEVERE] at net.minecraft.server.World.tickEntities(World.java:1190) 2012-11-10 20:55:08 [sEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569) 2012-11-10 20:55:08 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467) 2012-11-10 20:55:08 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) 2012-11-10 20:55:08 [sEVERE] Unexpected exception java.lang.NullPointerException at org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:98) at buildcraft.factory.TileQuarry.doWork(TileQuarry.java:210) at buildcraft.api.PowerProvider.update(PowerProvider.java:50) at buildcraft.core.TileBuildCraft.q_(TileBuildCraft.java:54) at buildcraft.factory.TileQuarry.q_(TileQuarry.java:136) 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)