After using 1.02 without difficulty, I was unable to get 1.1 to run under Tiger (10.4.2). After several emails back and forth with the developer, we finally got it working. His replies were almost instantaneous. If anyone has a similar problem, try trashing your old rules (Users/username/library/preferences/com.azarhi.DoSomethingWhen.plist. (You'll have to manually re-enter your rules after you do this, so you might want to writhe them down first.)