"Your file was not found", Fusion frozen

[SEIZMICdesign]

I think I accidentally tried to do something with a .prt file which I had imported into Fusion as part of an assembly. Anyway, I have to restart Fusion now. ERR

[lure23]

Also had the same dialog today. Had worked 45 mins on a design. Not saved.

I am online. Nothing out of the ordinary done as far as I can say.

When that happens the UI is unresponsive but the (Mac) menu seems to partially work (it asked to save my unsaved projects, but then failed to finally close Fusion 360).

macOS 11.2.1

Fusion 360 2.0.9719

[Pontooon]

I have the same issue... lost work... 😐

[Michael_T2]

I've experienced this 3 or 4 times (on mac). Not sure how to exit out of this window other than force quit. It happens when I use the navigator to share a file link shortly after I save (maybe too quick after I save). 

[TAD9]

SO annoying, anyone have any luck figuring out how to close this window on Mac? The program seems to be running just can't get the bloody thing to be gone

[SEIZMICdesign]

IIRC I had to force quit. Never had it happen again.