So far, they suggested I download an executable, run it, and reboot. They didn't say what this executable was supposed to do. Regardless, it didn't fix the problem.
Then, they suggested (in rather strange language) that I update to the PowerDirector 10 build 1424c, which PowerDirector 10 was suggesting anyway. I downloaded the file, installed it, and (just to be sure), rebooted. I verified that the update had succeeded, but the Rich Video problem is still there.
Sigh!