22:30:19 [SEVERE] java.lang.NoSuchFieldException: perm
22:30:19 [SEVERE] 	at java.lang.Class.getDeclaredField(Class.java:1899)
22:30:19 [SEVERE] 	at org.bukkitcontrib.player.ContribCraftPlayer.<init>(ContribCraftPlayer.java:87)
22:30:19 [SEVERE] 	at org.bukkitcontrib.player.ContribCraftPlayer.updateBukkitEntity(ContribCraftPlayer.java:587)
22:30:19 [SEVERE] 	at org.bukkitcontrib.ContribPlayerListener.onPlayerJoin(ContribPlayerListener.java:27)
22:30:19 [SEVERE] 	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:244)
22:30:19 [SEVERE] 	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
22:30:19 [SEVERE] 	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:321)
22:30:19 [SEVERE] 	at net.minecraft.server.ServerConfigurationManager.c(ServerConfigurationManager.java:124)
22:30:19 [SEVERE] 	at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:97)
22:30:19 [SEVERE] 	at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:33)
22:30:19 [SEVERE] 	at net.minecraft.server.NetworkListenThread.a(SourceFile:91)
22:30:19 [SEVERE] 	at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:451)
22:30:19 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
22:30:19 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)