rikkep43395372 wrote
No I have not downloaded any trials. I don’t think K ever have and if I should have done it then it would be a very long time ago.
The evidence you are providing indicates you did use a version more recent than Lightroom version 6. It doesn't really matter how that happened. You need to find somewhere on your hard disk other catalog files, one of them should open in LR 6. Use your operating system to search for all files with a name that ends with .LRCAT, and then try opening each one in LR 6.
Alternatively, you have opened a version of LR on your computer that is older than LR 6 (for example LR 5) and you then can't open the LR 6 catalog in LR 5.
So saying you didn't do things doesn't really add up here. The evidence contradicts your statements. You need to search your computer for different versions of Lightroom, you can search for files named Lightroom* by using your operating system to do the search of all hard disks.