Have you checked the folder permissions on the folder LR is trying to save the backup to? It may not be the same folder as where the catalog is stored.
Yes, I've checked the permissions on the backup folder. I've also tried moving the backup folder the other drive. I even created a copy of the catalog and moved it to other drive. None of this worked. Thanks for responding, and please advise what else to try.
Also, I tried to open up an old catalog in my backup folder that I know is not corrupted.... and then Import from another catalog. I selected the new catalog to import from. I get the following error:
"Can not import from this catalog at this time. Unexpected error when creating temporary working copy of the catalog"
I can import from other older catalogs.
At this point, I'm thinking the catalog has to be corrupted.
This doesn't sound like a corrupted catalog to me. If it was corrupted, it wouldn't even open at all.
I suggest you search the forum for other instances of being unable to back up the catalog, and look for solutions there.
>>This doesn't sound like a corrupted catalog to me. If it was corrupted, it wouldn't even open at all.
I don't know if the catalog is corrupted, but the fact that it won't optimize and can't be imported into a different catalog suggests something is wrong.
>>I suggest you search the forum for other instances of being unable to back up the catalog, and look for solutions there.
As stated, I am able to back up the catalog if I turn off the optimization option before running the back-up. I have searched the forum, and the known solutions for being unable to backup are not enough disk space, permissions wrong, and trying a different backup drive. None of those worked.
I figured it out. My catalog is not corrupt after all. The problem is that my Windows Temp directory is a separate partition that is only 1 GB in size. The catalog is about 1 GB. I guess the windows temp directory was causing problems for the optimization. I increased the Temp directory to 3GB and it optimized.