Stop struggling with Lightroom! There's no need to spend hours hunting for the answers to your Lightroom Classic questions. All the information you need is in 
wilinsky
New Member
Operating System: Windows 10
Exact Lightroom Version (Help menu > System Info): LR 6.13 and LR Classic
I installed LR Classic from the Adobe CC apps button. (I stupidly chose not to retain previous LR versions.) Seemed to install fine, no error messages. When I tried to start it, I got the message catalog is corrupt. I tried to load a different catalog, same message. Offered to 'repair', but immediately got message that it couldn't be repaired. After trying everything I could think of, I gave up, uninstalled Classic and went back to LR 6.13. When I tried to open it, I got the message that the catalog was corrupt. I went back to my last backup (a week old) and redid the work to get it up to date.
Yesterday I tried again, this time leaving LR 6.13. I succeeded in creating a new catalog and Classic opened. I then imported from my main catalog. Again success after an hour or more of hard disk thrashing. I tried to figure out how to get my old template installed. I exited. I tried to restart Classic. Got the message 'catalog is corrupt' and could not create a new catalog, nor open Classic no matter what I tried. I was back to square one, except this time the LR 6 catalog was not affected and I had a recent backup.
The only thing I found searching for a solution was that possibly windows permissions were involved. I did all the installing etc from my account which has admin privileges, so that couldn't be the explanation, I don't think. On the Adobe site I found things like 'update drivers for your graphics card' and 'be sure you have the latest windows updates' and stuff like that. Not really helpful. I found so few mentions of similar problems when searching I am beginning to think this could be a problem specific to my setup. I sure hope not, as such a problem might be extremely hard to solve. Anyhow, any suggestions would be greatly appreciated.
Exact Lightroom Version (Help menu > System Info): LR 6.13 and LR Classic
I installed LR Classic from the Adobe CC apps button. (I stupidly chose not to retain previous LR versions.) Seemed to install fine, no error messages. When I tried to start it, I got the message catalog is corrupt. I tried to load a different catalog, same message. Offered to 'repair', but immediately got message that it couldn't be repaired. After trying everything I could think of, I gave up, uninstalled Classic and went back to LR 6.13. When I tried to open it, I got the message that the catalog was corrupt. I went back to my last backup (a week old) and redid the work to get it up to date.
Yesterday I tried again, this time leaving LR 6.13. I succeeded in creating a new catalog and Classic opened. I then imported from my main catalog. Again success after an hour or more of hard disk thrashing. I tried to figure out how to get my old template installed. I exited. I tried to restart Classic. Got the message 'catalog is corrupt' and could not create a new catalog, nor open Classic no matter what I tried. I was back to square one, except this time the LR 6 catalog was not affected and I had a recent backup.
The only thing I found searching for a solution was that possibly windows permissions were involved. I did all the installing etc from my account which has admin privileges, so that couldn't be the explanation, I don't think. On the Adobe site I found things like 'update drivers for your graphics card' and 'be sure you have the latest windows updates' and stuff like that. Not really helpful. I found so few mentions of similar problems when searching I am beginning to think this could be a problem specific to my setup. I sure hope not, as such a problem might be extremely hard to solve. Anyhow, any suggestions would be greatly appreciated.
