After updating my server to the latest version, the computercube works fine but if I right click on it with anything in my hand the server crashes with a (recoverable) NPE and I get kicked.
Code
2012-12-24 14:30:45 [SEVERE] [ForgeModLoader] A critical server error occured handling a packet, kicking 4402
java.lang.NullPointerException
at iv.a(NetServerHandler.java:639)
at fk.a(SourceFile:58)
at cg.b(TcpConnection.java:454)
at iv.d(NetServerHandler.java:136)
at iw.b(NetworkListenThread.java:57)
at ht.b(SourceFile:30)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:702)
at ho.r(DedicatedServer.java:270)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)
2012-12-24 14:30:45 [WARNING] [Minecraft] Failed to handle packet for Corielicious/127.0.0.1: java.lang.NullPointerException
java.lang.NullPointerException
at iv.a(NetServerHandler.java:639)
at fk.a(SourceFile:58)
at cg.b(TcpConnection.java:454)
at iv.d(NetServerHandler.java:136)
at iw.b(NetworkListenThread.java:57)
at ht.b(SourceFile:30)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:702)
at ho.r(DedicatedServer.java:270)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)
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