WhitePhoenix0 ? i tryed already 4time setup mobArena now is w/O any error but Mobs still same problem when spawn goes automatic removed only dogs stay too all bosses spawn and then removed.. fixed moobs spawning now but got back error any know what this mean ? http://pastebin.com/qnFAkHHb EDIT by Moderator: merged posts, please use the edit button instead of double posting.
He is running the latest version (that is stable and published on bukkit). Stop your server, replace the jar, and turn the server back on, what happens?