2011-02-09 19:41:16 [WARNING] Failed to handle packet: java.util.IllegalFormatConversionException: o != java.lang.String
java.util.IllegalFormatConversionException: o != java.lang.String
        at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:3999)
        at java.util.Formatter$FormatSpecifier.printInteger(Formatter.java:2709)
        at java.util.Formatter$FormatSpecifier.print(Formatter.java:2661)
        at java.util.Formatter.format(Formatter.java:2433)
        at java.util.Formatter.format(Formatter.java:2367)
        at java.lang.String.format(String.java:2769)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:569)
        at net.minecraft.server.Packet3Chat.a(SourceFile:24)
        at net.minecraft.server.NetworkManager.a(SourceFile:232)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:71)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:104)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:283)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:209)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:512)