A follow-up: I solved my particular problem by trashing the Versions
folder in Application Support. Given that I hadn't yet used the
program, this didn't cost me any lost bookmarks, etc. Here's the
thread that gave me the idea to try this:
Hi, I just purchased and downloaded Versions and am unable to install.
I'm running Mac OS 10.5.8. When I try to install, I get the following
error message: Versions has encountered a problem. Please send the
anonymous crash report to help us fix the problem. I then click on
Send and Relaunch, but