I successfully downloaded 10.2 on two side by side computers on my desk. All the databases that I’ve tried open and work as expected, except one.
My address book database won’t open on one computer, but works on the other. The file is stored on Dropbox, like all my utilities, and has been in use for a long time. I tried to save as a new copy of the working version and it has the same error, but both the original and new version work on the second computer.
It may have originated when I tried to open the file and got the error, then looked at the second computer and saw I left the address book file open sitting on the desktop and forgot about it. Otherwise, no idea what’s different. The error comes up on an M1 iMac running Big Sur, while the working one is an old iMac running Mojave.
The error message is shown below. Does anyone know what’s going on and how to clear the problem?