Hi Dave, that's almost the same setup I have. My machine is an A3000 with 3640, 16MB/2MB, CV64/3D. I'm running CGX V3 and it works fine with OS 3.1 and 3.5. I presume you are running OS3.9 on that machine, right? If I can be of help, let me know.
By the way, we missed you at the meeting last week.