To summarize:
This was an existing project that I opened that day to do some work on
I saved the project several times during the session - I always do saves between takes/after edits etc.
The last time I clicked Save, I received the General Error pop up - over and over.
I could not save the project and closed Sonar, assuming my last save (which would have included everything anyway because I save a lot) would just reopen and have everything.
I opened Sonar and when I clicked on the project in OPEN, it said it did not exist.
I searched the entire hard drive and found no trace of the cwp file.
The Audio folder still existed but of course, no easy way to use the files without the project file settings.
I opened a bundle file from the previous week and redid all the changes I could remember in a new project.
Has anyone ever lost a cwp file like this and figured out where to fid it?