Can't open Waves GTR 3 with Snow Leopard
I used the Waves GTR 3 component to get some guitar sounds on Logic, but since I set up Snow Leopard on my MacBook Pro, GTR3 refuses to lunch because it doesn't recognize my Presonus Firestudio Project audio hardware, and tells me "Scanning Audio Device : Built-in Input".
Is somebody can help me to fix it?
Thank you !
MacBook Pro 2.4 Ghz, Mac OS X (10.6.1)