I just checked out jwowupdater (thread here: http://www.wowace.com/forums/index.php?topic=5917.0 ). A simple double-click of the .jar file and it runs on my Mac (OS X 10.4.10, PPC). Looks like it properly updated everything using default settings (when prompted for your WoW directory, just enter the folder containing WoW, not your addon folder).
Good to know there are options for Mac users in case it takes a while for MAU to get updated.
Seems to be working for me. I don't use Omen, so perhaps it's doing something that's confusing MacAceUpdater? I know when I used TinyTip, it used to constantly confuse the updater (somehow it was registering the version # of one of its libraries, not TT itself).
Working fine over here on a PPC Mac. Thanks a lot for this update, I'm getting really addicted to this tool and was starting to go batty renaming the changelog files each download! Hopefully the Intel folks can get their version sorted out (@ATC, did you put a trailing "/" in your addon path? It wouldn't work for me until I did this).
For me, the only other thing that needs fixing is the wrong permissions set on addons after MacAceUpdater installs them--but at least the workaround for that is a simple chmod in the Terminal, so not too painful.