Upgraded from Lightroom 6.10 to Lightroom Classic 15.0.1 Catalog issues
I just upgraded from Lightroom 6.10 to Lightroom Classic 15.0.1 and my main catalog did not upgrade correctly. I'm getting the error " Lightroom encountered problems trying to update the format of the catalog file and cannot use this catalog in this version of Lightroom. I'm running an older i7 4770 PC 16GB RAM with Windows 10 22H2 which I believe meets the system requirements from Adobe.
I've tried to upgrade my current catalog without success and also created a new catalog and tried to import from my current catalogue but that also failed. My catalog is 5GB tied to 7,000 photos and stored on a second internal HD which is separate from my boot OS drive where LR installed.
I did successfully update an older small Lightroom 4 catalog so I'm thinking there are issues with my larger catalog. The catalog has been optimized, and as far as I know, there are no corruption issues.
Any suggestions to help get my main catalog upgraded would be appreciated.