Internal Server Error with Iron Doors?

Hello everyone, I did not opened my server for a week until today, I was messing around with a friend and he discovered this odd bug when you come close to Iron doors or click on them, the server kicks you out saying: "Internal Server Error", and this is the console output:

Click me :D (open) Click me :D (close)

2011-11-22 20:46:49 [WARNING] Failed to handle packet: java.lang.NullPointerException
java.lang.NullPointerException
at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:274)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:592)
at net.minecraft.server.Packet15Place.a(SourceFile:57)
at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:92)
at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:501)
at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:471)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)

If someone knows how to solve please tell me

 

It looks like your running an development build of Craftbukkit. To fix this try updating to the latest development build. It may fix this but when a recommend build comes out this should be fixed.

The CraftBukkit twitter feed says they are almost done, but then... I suppose you have to define almost, "Valve almost" or "almost almost"
At any rate when it comes out , most bugs like these should be fixed.

 

I'm actually using #1337 (l33t ) which is recommended but I guess I can wait for an update... Thanks alot for the response!
OT: I see you are HeroSpawn's dev, I gotta tell ya, I LOVE THAT PLUGIN, GJ!

 

Oh, haha - It's probably a plugin causing it then and... it's also something to do with Spout. I suggest you upgrade the Spout plugin and see if it works.

OT: Thanks! I better go get this update for it done now...

 

Hello

Please can you help me. It says internal server error on my minecraft server for me and my friend. We are both ops.
I have tried this and everything people say to do. I have tryed downgrading to 1.1.0 and it doesnt work.

Would this be permissions?? becuase i have permissionsex

Thanks