Additional information: I have discovered that the log.fpt errors occur when trying to download from LoTW and even when trying to export the log as an ADIF. The program is unusable at this point. Any help would be greatly appreciated.

If you've run Backup/Restore and have a copy of your log you can uninstall LOGic, then reinstall from your latest subscription. Then run Backup/Restore again and Restore your copy. Then run update awards and you should be good to go? If all goes well update to the latest LOGic and hopefully everything is back to normal. Good luck!
Kyle, WA4PGM

Thank you both for the replies. The problem, I am sure, was that I restored only a an earlier version of Log.dbf and not the corresponding LOG.FPT. My LOGic files are stored on Google Drive so it is easy to retrieve an earlier version of a specific file, but due to my lack of knowledge about Log.fpt that action of restoring only Log.dbf led to the subsequent issues. I have things working now, after completely uninstalling LOGic and deleting all of the remaining files, then reinstalling and restoring from an ADIF. The reasons that I did not use the restore function initially were 1. my full backup was quite old; I download eQSL pictures (a neat option) but because I have just under 49,000 entries in my log there are a lot of eQSLs, and it takes about two hours to do a full backup so I don't do them very often; and 2. when the Log.fpt errors began the program was continually crashing. As you predicted, I have lost information in my Notes field.

Going forward I am not going to backup eQSL pictures. That makes frequent backups far quicker.

Thanks again and 73,
Bart NS4X