It looks like I've done something that makes it work only in Panther. I finally got my hands on a Jaguar machine today, and it looks like I've added something that it doesn't like. I have a guess to what that is, and the fix may be as simple as changing the default values of the user preferences. If you're familiar with editing plists, try changing the preference value for the combo box display to FALSE, and then see if it starts. Sorry about that.