I usually save my file before doing an Audio Mixed down, but I decided to mix down the project to a .wav file which was successful - Swam instruments dominated the project.
After the .wav was created, I went back to close the project under a new file name and then went to quit. The error showed up
Thank you, Steve for decoding that DMP file. I have handed the decoding of that file over to Audio modeling and They will take a deeper look at it tomorrow when the staff is back.