"Compare your block and item IDs from server to client; there's probably a mismatch."
I doubt its a block ID Conflict as My Dev server is ONLY running IC2. The Block ID Conflicts are all resolved on my Live Server.
I should read more thoroughly, The server and client on my dev server are using the same config file, I make it a point to copy over the client configs so they match, unless the config file is different in someway of course 
I've been trying to resolve an issue with IC2 for MC V1.1 but I am having no Luck. Every time someone tries to create an IC2 item on my server they get dropped. The item apears on the crafting table, but the moment you try to move it to your inventory they drop.
In an attempt to see what was wrong I moved the Server jar over to my Testing server and only added IC2 to the Mods Folder. I Generated a new world and only had IC2 Mod for my client. I had the same issue again.
I remodded my Server Jar and my client from scratch and tried once more, sadly I still had the same issue. The Error in the log is below, I must be doing something stupid as usualy. Anyone care to point it out to me?
java.lang.NullPointerException
at kq.b(SourceFile:208)
at qk.a(SourceFile:38)
at kq.a(SourceFile:147)
at pd.h(SourceFile:189)
at pd.c(SourceFile:9)
at xs.run(SourceFile:76)
2012-01-23 22:43:55 [INFO] cybird lost connection: disconnect.genericReason
