Having had to move to Logic X recently, I've had to say a heartbreaking final farewell to Dimension Pro and Rapture, two staples of my music production for years.
Those two synths had so much potential when they came out 10 years ago that even w/ the lack of updates and improvements, I still consider them among the best additions to any DAW.
As such, a port to a more current OS than Snow Leopard (2009) and to 64-Bit could extend their life cycle for yet another few years.
FWIW, even though more recent OS are not supported, both synths DO work just fine, and the problem seems to be with the installer. Alas, moving to a 64-Bit workstation makes that irrelevant.
Please, bakers, please... 64-Bit and OSX Mavericks/Yosemite support for a near future.
edit: both products discontinued with upgrade to with Rapture Pro - scook