Hi all!

Since today, whenever I try to either create a new file or open an old one I get this message: "This DWG file was saved by an application that was not developed or licensed by Autodesk. What do you want to do?". (AS YOU CAN SEE FROM THE SCREENSHOT)

The problem is that if I try to "Continue opening DWG file" the program gets stuck with the coloured wheel and doesn't open.

So there is actually no way to open it.

I tried to restart the computer and also reinstall the software, but none of them worked.

I have the newest version of Autocad for MAC.

Any suggestion?
THANKSSS