When Members Join I get the following error - NoSuchMethodError: com.nijiko.permissions.PermissionHa

Code:

2011-03-11 22:50:07 [SEVERE] java.lang.NoSuchMethodError: com.nijiko.permissions.PermissionHandler.inGroup(Ljava/lang/String;Ljava/lang/String;)Z
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.bukkit.migration.NijiPermissionsResolver.inGroup(NijiPermissionsResolver.java:70)
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.bukkit.migration.PermissionsResolverManager.inGroup(PermissionsResolverManager.java:117)
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.worldguard.bukkit.WorldGuardPlugin.inGroup(WorldGuardPlugin.java:1375)
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.worldguard.bukkit.WorldGuardPlayerListener.onPlayerJoin(WorldGuardPlayerListener.java:68)
2011-03-11 22:50:07 [SEVERE]     at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:162)
2011-03-11 22:50:07 [SEVERE]     at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:59)
2011-03-11 22:50:07 [SEVERE]     at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:255)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.ServerConfigurationManager.a(ServerConfigurationManager.java:98)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:87)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:27)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.NetworkListenThread.a(SourceFile:87)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:357)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:272)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
2011-03-11 22:50:07 [SEVERE] java.lang.NoSuchMethodError: com.nijiko.permissions.PermissionHandler.inGroup(Ljava/lang/String;Ljava/lang/String;)Z
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.bukkit.migration.NijiPermissionsResolver.inGroup(NijiPermissionsResolver.java:70)
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.bukkit.migration.PermissionsResolverManager.inGroup(PermissionsResolverManager.java:117)
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.worldguard.bukkit.WorldGuardPlugin.inGroup(WorldGuardPlugin.java:1375)
2011-03-11 22:50:07 [SEVERE]     at com.sk89q.worldguard.bukkit.WorldGuardPlayerListener.onPlayerJoin(WorldGuardPlayerListener.java:72)
2011-03-11 22:50:07 [SEVERE]     at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:162)
2011-03-11 22:50:07 [SEVERE]     at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:59)
2011-03-11 22:50:07 [SEVERE]     at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:255)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.ServerConfigurationManager.a(ServerConfigurationManager.java:98)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:87)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:27)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.NetworkListenThread.a(SourceFile:87)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:357)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:272)
2011-03-11 22:50:07 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)

Running CB 612
Worldedit newest
worldguard 5.0 Newest
permissions 2.5.5
thats about it...

everything WORKS.. but when people join I get ALL those messages?

The only other thread in all the world I found that had this problem was here

http://forums.multiplay.co.uk/minec...it-permission-questions-answers-8#post1013982

and it looks like this was a problem for someone BEFORE this latest upgrade.. so maybe I have something simple?

Anyone take a stab? I cant really tell where the problem lies from what the messages are telling me. Bukkit?
worldguard?

Funny thing is everything SEEMS to work ok.

those lines of SEVERE problems worry me.

Thanks!