Dave Smith Instruments SYNTHESIZERS

I finally got the editor software to communicate with my evolver desktop 
on my Intel mac running Leopard. The question is that I have an M-Audio 
49e usb keyboard that shows up in both the Audio/Midi utility and in the 
editor software. it works in the test mode of the  audio/midi utility 
and in the softsynth programs I have. It does not work in the editor. I 
have contacted Soundtower about this but they have not yet answered my 
e-mail. By the way, It works fine on a windows XP machine. Does anyone 
have any similar experiences or sucess with this kind of keyboard? Also, 
I own the Vyzor editor for the PC and have considered crossgrading to 
the mac version after V2 is released but will only do so if i can get 
affirmation that the same problem won't occur using the same hardware.
Thanks