2012-09-10 14:37:29 [SEVERE] Unexpected exception
java.lang.NullPointerException
at dan200.computer.shared.TileEntityMonitor.contract(TileEntityMonitor.java:741)
at dan200.computer.shared.TileEntityMonitor.contractNeighbours(TileEntityMonitor.java:655)
at dan200.computer.shared.TileEntityMonitor.destroy(TileEntityMonitor.java:57)
at dan200.computer.shared.BlockPeripheral.remove(BlockPeripheral.java:171)
at net.minecraft.server.Chunk.a(Chunk.java:434)
at net.minecraft.server.Chunk.a(Chunk.java:397)
at net.minecraft.server.World.setRawTypeId(World.java:374)
at net.minecraft.server.World.setTypeId(World.java:443)
at net.minecraft.server.Explosion.a(Explosion.java:258)
at net.minecraft.server.World.createExplosion(World.java:1565)
at net.minecraft.server.WorldServer.createExplosion(WorldServer.java:245)
at net.minecraft.server.EntityTNTPrimed.explode(EntityTNTPrimed.java:88)
at net.minecraft.server.EntityTNTPrimed.F_(EntityTNTPrimed.java:66)
at net.minecraft.server.World.entityJoinedWorld(World.java:1286)
at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:111)
at net.minecraft.server.World.playerJoinedWorld(World.java:1268)
at net.minecraft.server.World.tickEntities(World.java:1164)
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)