Thanks a lot for the insight Phanx. I implemented your changes, but I am still getting "Interface action failed because of an AddOn" message when I open the map while in combat.
Here is a link to the TaintLog produced:
http://pastebin.com/ExwfJD1g
I see the the DropDownMenu is being tainted, but there are also other aspects of the map that are being tainted. As for the DropDownMenu, I am grabbing that directly from Mapster(Thanks Nev <.<), and I don't ever recall Mapster producing any issues -- and further more, how will I make any changes to the map if it just breaks in combat?