CommandBook

Have you updated? You should update WorldEdit to 5.4.5 or newer and (if you're running MC 1.4) CraftBukkit to 1.4.2-R0.2 or newer.

Changes in this version:

• Added /enchantments command to list enchantments.
• Made /call-related messages configurable.
• Made /afk support no parameters. Use /back to return now.
• Made the body of PMs colorable.
• Made warps check commandbook.warp.teleport.<warpname> for permissions.
• Fixed support for /tp @p x y z with command blocks.
• Fixed the lack of support for setting non-animal creatures as babies (when supported). Note that Bukkit does not yet support baby zombies.
• Fixed /rocket no longer properly rocketing players.
• Fixed /kick not using display names for the entire message.
• Fixed /spawnmob to only list proper mobs.
• Fixed issues with AsyncChat.
• Fixed configuration reloading not working.
• Fixed issues with teleporting for some people, where players appeared in the ground or worse.
• Fixed the online list showing vanished players.
• Fixed issue with remove permission for the locations-related portions using the wrong name of the location.
• Fixed /heal not setting food levels.
• Clamped number of items 2,240 if items are being dropped with /item or /give.

Thank you to morganm, TexasGamer, authorblues, DarkArc, and run942 for their contributions to this release.

Quote from the CommandBook team:

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• WorldEdit should be updated to version 5.4.5 or newer.
• CraftBukkit should be updated to version 1.4.2-R0.2 or newer (for MC 1.4 users only).
• If you want to spawn Withers, use "WITHERBOSS" and not "WITHER".
• For other issues, see our issue tracker for bugs affecting this version (updated automatically).