Lightroom Classic CC Catalog Corrupt...or not?

[leonyu13]

My catalog became corrupt after a successful conversion from the original LR CC. I was able to open and work in the newly updated Classic catalog until it tried to backup the catalog, per the weekly backup within LR. The backup failed and after that the catalog was corrupt. I had a separate backup created outside of Lightroom which I opened, but that became corrupt as well when attempting to backup within LR. LR's attempts to optimize and subsequently repair the catalog both failed. I can still open and use the corrupt catalog by tricking LR , telling it that I'm opening a different catalog but it will not optimize, repair or backup within LR. So if it opens in this manner is it really corrupt?

Here are some details:

Windows 10 latest update.

Catalog and image files stored on USB 3.0 external drive.

I tried copying the catalog to an internal drive but it still fails in the same manner.

Creating a new test catalog on an internal drive works fine and will optimize and backup. After copying that same catalog to the external drive it will also backup and optimize.

After creating a new test catalog on the external drive I got this result, but clicking "try again" allowed the catalog to backup. Repeating the backup had the same result. I am able to optimize the catalog, but when attempting to back it up, the result is the same.

I am tempted to use my original Classic catalog, but the only way I can do it is by tricking LR when it thinks the catalog is corrupt. I would hate to continue using it in the manner if it is really corrupt. It looks like my only safe option at the moment is to revert to the old (non-classic) CC and the old CC catalog, but I will have to redo a couple days of editing for clients. I would like to avoid that if possible. Please help!

[leonyu13]

Anyone know how to get Adobe to help me? It's been over 24 hours and I have clients waiting for prints. Stupid me for upgrading so soon, I should know better.

[KR Seals]

That message does not say you have a corrupt catalog, it says the destination folder does not have the correct permissions or available space. Check those items. Sometimes an operating system update/upgrade will change permissions or your target drive may be almost full.

[leonyu13 · Accepted solution]

Sorry, there were a bunch of error messages that I didn't screen-shot, but it was definitely being identified as corrupt. I ended up creating a new catalog and imported my current client images from the supposedly corrupt catalog. That worked fine and I now have a small catalog that contains those two clients' files. Then I allowed CCC to re-upgrade my last good catalog from LR6, and that worked fine. The upgraded catalog is current except for the two clients that I have in their own small catalog. I should be good to go from here. Thanks. 

[KR Seals]

I'm glad to hear you worked it out. I can imaging how frustrating it would be not to be able to get your work out.