TIM NEWTON  http://www.advenio.com/phpBB2/viewtopic.php?t=1241  
(Version 2.0.8)

TIM NEWTON  Here's a link to the issue on the app's support board

Does not look promising that a Snow Leopard version will be coming.  
(Version 2.0.8)

TIM NEWTON  I've been able to get it to launch in Snow Leopard by setting the option to open in Rosetta (Get Info on the app), but the connections popup menu doesn't work so you can't connect to any database. Can't wait for an update too!  
(Version 2.0.8)

TIM NEWTON  Running an iMac 2007 with Snow Leopard. Wasn't slow, and there was no stuttering.  
(Version 1.0)

TIM NEWTON  followup: I deleted the folder /users/myUsername/Library/Application Support/Aptana and that appears to have fixed the startup problem. Don't know what side effects this will cause, but I'm sure to find out. :-)  
(Version 1.2.6)

TIM NEWTON  Overall, I've liked this program; however, version 1.2.6 gave me an error on launch. Now the program will not startup and tells me to review the error log (which I did but it is meaningless to me). I tried reinstalling 1.2.5 (which I kept as a backup), but I get the same errors. My low stability rating is in regards to 1.2.6; 1.2.5 was fine.  
(Version 1.2.6)