here is the error it makes when someone crafts a iron shovel
2012-06-23 01:05:39 [iNFO] crafting allowed
2012-06-23 01:05:46 [sEVERE] java.io.IOException: Received string length is less than zero! Weird string!
2012-06-23 01:05:46 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:132)
2012-06-23 01:05:46 [sEVERE] at net.minecraft.server.Packet255KickDisconnect.a(SourceFile:16)
2012-06-23 01:05:46 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:83)
2012-06-23 01:05:46 [sEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.java:152)
2012-06-23 01:05:46 [sEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:273)
2012-06-23 01:05:46 [sEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:76)
2012-06-23 01:05:46 [iNFO] Ishmair lost connection: disconnect.genericReason