I too am getting the above error. Yesterday morning I updated from 9.01 to 9.02. I tried to change from my father's record to my brother's record. I got the above error, and the screen showed the focus was my brother's record, but all of my father's tags were showing on the screen. I had the option of "Abort", "Ignore" and "Retry", I selected "Abort" as it was the suggested button on the screen. This did not solve my problem.
So then I went through the following steps:
I ran VFI
I ran Optimize
I re-booted the computer, started up TMG again, and again had the same error message.
I then un-installed Version 9.01, re-installed Version 9.02, my computer remembered my Serial Number and I did not have to re-enter it, but I was still getting the same error message, and I shut down my research yesterday afternoon.
Yesterday, as in the past, I was running Norton 360 and DropBox. I have never had any issues in the past installing the TMG program with these programs running.
I am waiting for a response to this error message either here on the Forum or in the TMG Mailing List (hosted by Rootsweb), as I have seen that there are other users that are also getting this error message.