Lesson: Check To Make Sure You Have Uploaded The Correct Installer
I made some major changes to Bingo Card Creator last, oh, Thursday I think it was, and then built and uploaded. Unfortunately, this is largely a manual process and I missed the critical “copy the new installer from the build directory to the web directory before sync’ing the local copy of my website and the FTP server”. Which means everyone has been getting the old version. D. O. H. Well, no sense crying over spilled milk.