I believe that happens because you haven;t set addon to 1. Go to Basic settings under Edit and set 'Addon required' to 1, It's in the lower-right corner of the 'Basic' window, in case you can't find it.
This should also be moved to map discussion, it's no big deal, but next time put the topic where it belongs.
This post has been edited by TitanMarkII: Jan 22 2007, 02:19 PM