02:07:16 [SEVERE] java.lang.NullPointerException
02:07:16 [SEVERE] 	at net.minecraft.server.ItemStack.doMaterialsMatch(ItemStack.java:243)
02:07:16 [SEVERE] 	at ee.TileCondenser.extractItem(TileCondenser.java:539)
02:07:16 [SEVERE] 	at buildcraft.transport.pipes.PipeItemsWood.checkExtract(PipeItemsWood.java:111)
02:07:16 [SEVERE] 	at buildcraft.transport.pipes.PipeItemsWood.doWork(PipeItemsWood.java:90)
02:07:16 [SEVERE] 	at buildcraft.transport.TileGenericPipe.doWork(TileGenericPipe.java:159)
02:07:16 [SEVERE] 	at buildcraft.api.PowerProvider.update(PowerProvider.java:52)
02:07:16 [SEVERE] 	at buildcraft.transport.TileGenericPipe.l_(TileGenericPipe.java:108)
02:07:16 [SEVERE] 	at net.minecraft.server.World.tickEntities(World.java:1182)
02:07:16 [SEVERE] 	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:534)
02:07:16 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:441)
02:07:16 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)
02:07:16 [SEVERE] Unexpected exception
java.lang.NullPointerException
	at net.minecraft.server.ItemStack.doMaterialsMatch(ItemStack.java:243)
	at ee.TileCondenser.extractItem(TileCondenser.java:539)
	at buildcraft.transport.pipes.PipeItemsWood.checkExtract(PipeItemsWood.java:111)
	at buildcraft.transport.pipes.PipeItemsWood.doWork(PipeItemsWood.java:90)
	at buildcraft.transport.TileGenericPipe.doWork(TileGenericPipe.java:159)
	at buildcraft.api.PowerProvider.update(PowerProvider.java:52)
	at buildcraft.transport.TileGenericPipe.l_(TileGenericPipe.java:108)
	at net.minecraft.server.World.tickEntities(World.java:1182)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:534)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:441)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)