Big problem, I don't know if you ever had this issue.
Sketch 42 and Framer 92 opened, on my macbook 10.12. Framer file with Sketch imported.
As I hit upload to send my framer project to Framer Cloud, the OSX loading wheel appears, my framer code wipes out, and nothing uploads. Worst, a lot of files from folders around my project (sometimes 4 or 5 folders up) are deleted. Not trashed, deleted !
Glad I always work in my Dropbox folder...
It happened twice today, on 2 different computers, with the same configurations.