It's nice having the SDL version on OS X. I note with the version we've now got, the 'themes' folder from the package needs to be put in '~/Library/Application Support/AlephOne' as well, or those themes won't show up in the game. When they do, it looks really good :).
The only other issue I'm seeing is inverted mouse movement recognition in the menus, i.e. to begin a new game I have to click near the bottom of the menu screen. I'm guessing this is to do with using a nightly build!
It's nice not to have the A1 log file in my home directory as well! Keep it up.