QTKirk,
Thanks for the fast 'double' reply. Unfortunately, the problem has nothing to do with trashing the content of WebFoundation. I saw this recommendation in one of your previous posts, and I actually tried it (I should have mentioned it) before initiating this tread.
BTW, what is the (crucial?) role of the .nib files sitting in the ~/Library/Caches/Sherlock/Channel Nibs folder?