Cannot open or save files
Cannot open existing files or save the one I already had opened.
When trying to open various files I get the same error message: "Error loading document. Invalid document type." (file extension xd on all of them)
When I try to save the file I already have open I get this error message: "The document "KUNDEREGISTER grafisk v2.xd" could not be saved."
When I try save as... on the same file I get this error message: "The document "KUNDEREGISTER grafisk v2.xd" could not be saved as "KUNDEREGISTER grafisk v3.xd""
I'm on a Mac OS X El Capitan (10.11.6) and XD is the 0.6.12.17 Beta version, continually updated via CC updates.
Please help, I'm using the app in a client project


