com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:528)
03.01 13:05:23 [Server] WARN at java.lang.reflect.Method.invoke(Method.java:483)
03.01 13:05:23 [Server] WARN at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
03.01 13:05:23 [Server] WARN at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
03.01 13:05:23 [Server] WARN at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
03.01 13:05:23 [Server] WARN at com.sk89q.worldguard.bukkit.commands.RegionCommands.define(RegionCommands.java:417)
03.01 13:05:23 [Server] WARN at com.sk89q.worldguard.bukkit.commands.RegionCommands.getPermissionModel(RegionCommands.java:88)
03.01 13:05:23 [Server] WARN Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "com.sk89q.worldguard.bukkit.RegionPermissionModel.<init>(Lcom/sk89q/worldguard/bukkit/WorldGuardPlugin;Lorg/bukkit/command/CommandSender;)V" the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) of the current class, com/sk89q/worldguard/bukkit/commands/RegionCommands, and the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) for the method's defining class, com/sk89q/worldguard/bukkit/RegionPermissionModel, have different Class objects for the type com/sk89q/worldguard/bukkit/WorldGuardPlugin used in the signature
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:469)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:558)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:260)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:667)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.ServerConnection.c(SourceFile:134)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:157)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.PacketPlayInChat.handle(PacketPlayInChat.java:47)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.PacketPlayInChat.a(PacketPlayInChat.java:28)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:815)
03.01 13:05:23 [Server] WARN at net.minecraft.server.v1_7_R3.PlayerConnection.handleCommand(PlayerConnection.java:953)
03.01 13:05:23 [Server] WARN at org.bukkit.craftbukkit.v1_7_R3.CraftServer.dispatchCommand(CraftServer.java:703)
03.01 13:05:23 [Server] WARN at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:180)
03.01 13:05:23 [Server] WARN at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:54)
03.01 13:05:23 [Server] WARN at com.sk89q.worldguard.bukkit.WorldGuardPlugin.onCommand(WorldGuardPlugin.java:226)
03.01 13:05:23 [Server] WARN at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:409)
03.01 13:05:23 [Server] WARN at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:471)
03.01 13:05:23 [Server] WARN at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:516)
03.01 13:05:23 [Server] WARN at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:538)
03.01 13:05:23 [Server] WARN com.sk89q.minecraft.util.commands.WrappedCommandException: java.lang.LinkageError: loader constraint violation: when resolving method "com.sk89q.worldguard.bukkit.RegionPermissionModel.<init>(Lcom/sk89q/worldguard/bukkit/WorldGuardPlugin;Lorg/bukkit/command/CommandSender;)V" the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) of the current class, com/sk89q/worldguard/bukkit/commands/RegionCommands, and the class loader (instance of org/bukkit/plugin/java/PluginClassLoader) for the method's defining class, com/sk89q/worldguard/bukkit/RegionPermissionModel, have different Class objects for the type com/sk89q/worldguard/bukkit/WorldGuardPlugin used in the signature