Vista - AIOC Error with Lexmark P4350/Vista HP x64

Installed my Lexmark P4350 All-in-on on a Gateway DX4820 with Vista Home Premium x64 using the x64 driver from lexmark. Can print from programs and can also scan IF I don't open the Imaging Center - just open the Lexmark Photo Imaging program. If I attempt to open the Imaging Center, I get the "AIOC.exe has stopped working" error, and the program shuts down. I've noticed that the program gives the following messages during startup 1.) Preparing All in one for first use... 2.) searching for programs..., and then it gives the AIOC error. Upon reading up on Vista Home Premium, I've discovered that it does not come with the MS Fax and Scan utility (only Business and Ultimate have it). Is it possible that the AIOC is shutting down when it can't locate the MS fax and scan utility? Is there any way to verify this?