For anyone who is having this problem and scratching heads in sorrow, here’s a partial workaround that should save the work you did in your corrupt project.
If you are in the habit of grabbing stills, then your grades and nodes are in /DaVinci Resolve/.gallery/ on your hard drive. It’s a hidden folder, so you’ll have to “show hidden files and folders”.
For MAC users, the full path is ~/Documents//DaVinci Resolve/.gallery/
Usually, when you export a still from DaVinci Resolve, it’s saved as a .DRX file, and all the grading you did on that specific clip is stored inside that file.
If you didn’t export your stills, there is still a way to salvage all the stills you had in your gallery.
Here’s a procedure written by a BM tech support:
“you will need to do a little bit of a manual work.
Make a duplicate of the hidden (.gallery) folder in a safe location—in that folder drill down until you find there files in each directory—name.DPX, name.xml, different–name.xml. Change extension of the xml that has the same name as the DPX file to .drx. Do not change the other XML After that you will be able to import that still with its grade. You will have to do this for each single set of 2 XMLs and a DPX.”
I hope this helps anyone who have had a project crap out on them.