Pipes crashing sever?

[Xiss]

Launcher/pack Version: tekkit 2.2.1

Operating System: Windows 7

Version of Java: 7, 1.7.0-b147

Description of Problem: Server crash cause of pipes

Error Messages: N/A

Link to pastebin of log: posted in code...

Hello there,

I have started a tekkit server with my freinds and it all went fine untill the server crashed and we do not have any clue what we did or why it happend but here is the Code,

16:12:29 [ALLVARLIG] java.lang.NullPointerException

16:12:29 [ALLVARLIG]  at net.minecraft.server.ItemStack.doMaterialsMatch(ItemS

tack.java:243)

16:12:29 [ALLVARLIG]  at ee.TileCondenser.extractItem(TileCondenser.java:539)

16:12:29 [ALLVARLIG]  at buildcraft.transport.pipes.PipeItemsWood.checkExtract

(PipeItemsWood.java:111)

16:12:29 [ALLVARLIG]  at buildcraft.transport.pipes.PipeItemsWood.doWork(PipeI

temsWood.java:90)

16:12:29 [ALLVARLIG]  at buildcraft.transport.TileGenericPipe.doWork(TileGener

icPipe.java:159)

16:12:29 [ALLVARLIG]  at buildcraft.api.PowerProvider.update(PowerProvider.jav

a:52)

16:12:29 [ALLVARLIG]  at buildcraft.transport.TileGenericPipe.l_(TileGenericPi

pe.java:108)

16:12:29 [ALLVARLIG]  at net.minecraft.server.World.tickEntities(World.java:11

82)

16:12:29 [ALLVARLIG]  at net.minecraft.server.MinecraftServer.w(MinecraftServe

r.java:534)

16:12:29 [ALLVARLIG]  at net.minecraft.server.MinecraftServer.run(MinecraftSer

ver.java:441)

16:12:29 [ALLVARLIG]  at net.minecraft.server.ThreadServerApplication.run(Sour

ceFile:465)

16:12:29 [ALLVARLIG] 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.j

ava: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)

>

i have only posted the error part,

Its only the world that crashes we tried with a new world then everything went fine but with the world we want to play on it crashes.

Thanks,

[Guilty_Air]

I have the same problem, and i would really like to know how to fix this issue

[Jusupov]

You placed a pipe next to a condenser and the server died. Fixes include finding the pipe with mcedit and deleting it and using transposers/filters next to condensers instead of the terrible bc pipes.

[Xiss]

You placed a pipe next to a condenser and the server died. Fixes include finding the pipe with mcedit and deleting it and using transposers/filters next to condensers instead of the terrible bc pipes.

Hello,

The thing is we dident place any pipes, when the server crashed we have had the pipes there for a very long time.

[Hrocdol]

I believe I have the same null pointer exception crashing my server, and I believe it has to do with the top 'target' slot of the EE condenser being empty. I think it's using "net.minecraft.server.ItemStack.doMaterialsMatch" to check whether the thing it's about to pull for the wood pipe is the same as the thing in the top slot, and if it isn't, check the next stack in the box. But when there's nothing in the top slot... Well, there's no code to handle that case, seemingly. Boom, NPE.

In my case, I'd just emptied this condenser, moved it, placed the BC wood pipe, RS engine, torch, threw some crap to be condensed in the box, and then the server blew up before I could place the target item.

Edit: Also, my world was fixed by: http://forums.technicpack.net/index.php/topic,5663.msg38697.html#msg38697

HTH

- Hrocdol