Sorry, I'm Russian, so I will only say that this error on all versions of Craftbukkit and I have also installed MobArena AutoMessage, ChatManager, iConomy, Chestshop, Commandbook, CreativeGates, Falsebook, Jail, LWC, MobDisguise, OpenInv, PermissionsEX, PVPTime, SaveExplosions, TreeAssist, WorldEdit, WorldGuard. Link to error: http://pastebin.com/NQJeWdtp Translate by Google.