November 2020 - last edited November 2020
@CharmB789 Oh. Thank you for letting us know. Unfortunately, if the only copy of the lot is the one in your library that you sent the tray files for, since at least one of the tray files is corrupted in that grouping of files needed to correctly save the lot information to the library, I'm afraid this copy will not be useful to you. You said that the lot was a remodel/reno of another build? Perhaps it you could try downloading the original home and placing it on a different lot and doing renovations that don't include whatever CC you had used on the lot with the issue? It would also be a good idea to check for updates to your CC as they may come out (now or in the future) following the recent game update/patch.
November 2020
I could go back to the original home but I edited a lot of the home so it would be hard to start over. I only have the one without the CC.
November 2020
Is there anything that can be done?
November 2020 - last edited November 2020
@CharmB789 I'm at a loss for any way you can recover the modified lot. Redoing the renovations without using the CC that may have caused the issue is the only way I see. Sorry. You may want to keep a few versions of the renovations saved into the library at different stages of completion until you are sure all has saved well when done and the issue has not re-occurred.
November 2020
I can figure out other ways to fix these problems of both the broken lot and backing up these files after all. So thanks anyway for all your help.
November 2020
@CharmB789 You are very welcome. It's unfortunate there was not a fix, but sometimes it's still important to make sure there isn't a fix before going through the work to re-do something! Anyway, I hope the process goes smoothly for you. Happy simming!