File won't open programmatically, but opens from the finder

Not sure why one of my small files converted from Pan6 with no forms would not open to view programmatically, but I could do a lookup and get information out of the file. I found I could open the file from the Finder, but could not open it to view from another file containing and OpenDatabase statement. I was finally able to open the file from the Finder and do a File Save. That seemed to fix it. It seems to be working now, but thought I would report this strange anomaly.