I'm running Panther and when I bring up iCalView (or the iCalViewer screen saver) all I get is a completely black window with a thin orange stripe down one side. I'll be happy to mail a screenshot to the author if he/she wishes.

But, for now, either I'm doing something terribly wrong (I followed the directions of course) or the developer might need to go back to the drawing board. I'd really love to see this work!