IncompatibleClassChangeError

[smickles]

Some of my plugin's users are reporting the following error
I can't seem to replicate it, but I feel like I should report it.
Is there some way too avoid receiving the error?

[SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'buy' in plugin DynaMark v0.0.2.2
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:41)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:163)
at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:353)
at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:756)
at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:721)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:714)
at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:92)
at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:500)
at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:464)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
Caused by: java.lang.IncompatibleClassChangeError: Expected static method com.nijikokun.register.payment.Methods.getMethod()Lcom/nijikokun/register/payment/Method;
at me.smickles.DynamicMarket.DynamicMarket.buy(DynamicMarket.java:120)
at me.smickles.DynamicMarket.DynamicMarket.readCommand(DynamicMarket.java:237)
at me.smickles.DynamicMarket.DynamicMarket.onCommand(DynamicMarket.java:222)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:39)
... 13 more

[bziemons]

If you can't recreate the error on your server with the latest Register version, then your plugin's user have the wrong Register version.

[smickles]

eh, i'm gonna close this...