I was so encouraged, but no. Fails everytime again. I was testing with a config that isn't as complex as my home theater MX880 that is tied to my MSC400. As soon as I go to update that MX880, it fails regardless of which background theme I choose. But of course, under Windows XP, it works fine!

This is maddening!

I have XP on a Parallels install on my MacBookAir, which fortunately runs very well, very fast, and will simply have to be the solution for supporting a complex home theater installation with MX-880s and an MCS400. Perhaps at some point I'll upgrade to the new IP controllers, but I hate to fix what isn't broken (hardware wise). Or switch away from URC althogether!