My .ssg file won't open, I receive and error message

i also faced same problem this morning, did you find any solution for this?

 Try to open the file with other 3D app (you can use Stager previous version, also). Than export as OBJ, FBX or other format snd try to open in Stager.

Thank you Ares.
What is the cause of this and what do you suggest I do? Does this mean I have to start over? It happend again this morning and none of the files want to open, including my backup files.

Thank you for sending a log file. Team will review and take it in account for next updates.