Somebody please help!
2012-08-26 21:25:47 [sEVERE] java.lang.NullPointerException
2012-08-26 21:25:47 [sEVERE] at net.minecraft.server.ItemStack.damage(ItemStack.java:172)
2012-08-26 21:25:47 [sEVERE] at ic2.common.TileEntityCropmatron.scan(TileEntityCropmatron.java:133)
2012-08-26 21:25:47 [sEVERE] at ic2.common.TileEntityCropmatron.q_(TileEntityCropmatron.java:73)
2012-08-26 21:25:47 [sEVERE] at net.minecraft.server.World.tickEntities(World.java:1190)
2012-08-26 21:25:47 [sEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)
2012-08-26 21:25:47 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)
2012-08-26 21:25:47 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
2012-08-26 21:25:47 [sEVERE] Unexpected exception