I also just installed the music viewer. I have a laptop with vista ultimate 32 bit version installed and version 9 of Adobe. The program does not run well with my setup - it seems to be a problem the the Adobe PDF reader and the music viewer program. I emailed Jergen and he responded saying he is working on the problem. His program is set up for Adobe V7. Hope this helps. By the way, he doesn't think it is a Vista problem.

Hammer