24.0.75 has just been released which fixes the OSX 10.8 launch problem.
I just dumped the older version I had and downloaded/installed 24.0.75, unfortunately I'm getting the exact same behavior as before, icon bounces for about a minute and then the only option is Force Quit (Application not responding).
I also was unable to get the above provided Terminal command to run the older version. This newer version does however launch with that same command, now I just need to find my MC25 Master License, it seems to have vanished from my email folder, I know that sounds crazy but it simply isn't where I thought it should be.
EDIT: Restored the license, everything appears to be normal, except it would not launch originally from the icon as stated above, only the Terminal. After loading a library, building thumbnails etc... I quit and then tried to launch again from the icon, still no dice, bounces for a minute and then nothing happens, only choice is Force Quit (application not responding).