I wrote a mod and it works in the test environment, but not on a production server.  It can't find methods (I also had this problem with Enchantment.setName() and Enchantment.getName().  It works when I test it launching from eclipse, but not when I run in production.

 

The error log is here:

    2013-12-23 17:25:43 [iNFO] [sTDERR] java.lang.NoSuchMethodError: net.minecraft.nbt.NBTTagCompound.getCompoundTag(Ljava/lang/String;)Lnet/minecraft/nbt/NBTTagCompound;
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at us.xvicario.soultether.EnchantmentSoulTether.onPlayerRespawn(EnchantmentSoulTether.java:71)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at cpw.mods.fml.common.registry.GameRegistry.onPlayerRespawn(GameRegistry.java:397)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.server.management.ServerConfigurationManager.func_72368_a(ServerConfigurationManager.java:470)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.network.NetServerHandler.func_72458_a(NetServerHandler.java:895)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.network.packet.Packet205ClientCommand.func_73279_a(SourceFile:30)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:462)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:141)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(SourceFile:30)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:691)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:276)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
    2013-12-23 17:25:43 [iNFO] [sTDERR]     at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
    2013-12-23 17:25:43 [sEVERE] [Minecraft-Server] Encountered an unexpected exception NoSuchMethodError
    java.lang.NoSuchMethodError: net.minecraft.nbt.NBTTagCompound.getCompoundTag(Ljava/lang/String;)Lnet/minecraft/nbt/NBTTagCompound;
            at us.xvicario.soultether.EnchantmentSoulTether.onPlayerRespawn(EnchantmentSoulTether.java:71)
            at cpw.mods.fml.common.registry.GameRegistry.onPlayerRespawn(GameRegistry.java:397)
            at net.minecraft.server.management.ServerConfigurationManager.func_72368_a(ServerConfigurationManager.java:470)
            at net.minecraft.network.NetServerHandler.func_72458_a(NetServerHandler.java:895)
            at net.minecraft.network.packet.Packet205ClientCommand.func_73279_a(SourceFile:30)
            at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:462)
            at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:141)
            at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
            at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(SourceFile:30)
            at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:691)
            at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:276)
            at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
            at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
            at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)

 

If you need more of hte log or anything ask, it is my friend who is hosting it and this is what he gave me.

from a brief look it appears that you are either:

 

A: not recompiling and reobfuscating

(you cannot use the eclipse generated .class files, they need to be reobfuscated by MCP)

(you need to run recompile in the MCP directory, then reobfuscate (either one), then grab your finished .class files from the reobf directory, add any assets/etc and pack into your distribution format (.jar/.zip))

or...

B: are trying to access client-only methods from server-side

(you have to proxy those calls, or not access client-only methods from server)

I was using an unobfuscated version.  Thanks...