My apologies if this has been asked and answered elsewhere, but I could not find this exact issue...
My System is MAC PRO 3,1 OSX 10.8.2 (ML) with 18 GB RAM...running in 64-bit mode
If I run the Aria Player (Player v.1.504 Engine v.1606 (OS X x86) ) as a Standalone, the Activity Monitor shows it is one of the few Apps running in 32-bit mode.
Also, my Vienna Ensemble Pro 5 only recognizes the Plugin when I run the 32-bit Server, and not when I run the 64-bit Server. Same is true with Digital Performer 8 (which I am running in 64-bit mode)...the only way I can run the Aria Player is to host it in the 32-bit VEP5.
What little I can find on this topic says the Aria Player will run in 64-bit mode. I also found another note that suggested my Audio Drivers are not up to date. They are...and I am running several other Virtual Instruments in 64-bit mode just fine.
Any help would be greatly appreciated...