I see that a Tekkit server is using this mod but I can't get it to work with mine, I keep getting an internal server error when I try to do anything. What can I do to resolve this?

Thanks

The error I get after money for instance is:

18:37:49 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'mone
y' in plugin Gringotts v1.2.1
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:16
6)
at forge.bukkit.ForgeCommandMap.dispatch(ForgeCommandMap.java:55)
at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:497)
at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:843)
at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:799)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:781)
at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34)
at net.minecraft.server.NetworkManager.b(NetworkManager.java:234)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:119)
at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:83)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:579)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Player.getEnderChest()Lorg/bukkit/inventory/Inventory;
at org.gestern.gringotts.Account.balanceCents(Account.java:43)
at org.gestern.gringotts.Account.balance(Account.java:55)
at org.gestern.gringotts.Commands.balanceMessage(Commands.java:224)
at org.gestern.gringotts.Commands.access$100(Commands.java:17)
at org.gestern.gringotts.Commands$Money.onCommand(Commands.java:52)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
... 13 more

Hi, my bad, I hadn't released the Tekkit compatible version yet. Get it here for now: https://github.com/downloads/jastice/Gringotts/Gringotts-1.2.1-bukkit1.2.5-SNAPSHOT.jar

I will do a proper release sometime this week.