Well, now I've gotten 1.2.2 to open -- not sure what the problem was, may have been all my machine and no problem with the software -- and I really like this program. It's the last "missing link" in implementation of the OS X Address Book, and has persuaded me to convert all my contacts to Address Book. Very nice options, good printing, good user interface. I'm going to download 1.2.3, and my "wish list" for 1.2.4 is limited to barcodes. Well worth the price!