Thanks for the great instructions. I put LyX in my TeX folder, but I customized the path in Skim preferences, so that's probably not the problem. (Just in case, I tried putting LyX back into /Applications, but that didn't seem to do anything.
Okay, I ran the debugging program, and when I hit the key combo in Skim, nothing registers. There's no message at all. (I'm not using xdvi. It's not available for Mac. There's a Mac version, but it costs money to register it, and I've already got Skim, and blah blah blah. I have looked at the manuals, but to no avail.) -N
