Hi Charl,

What kind of alert do you see from AutoCAD when you are trying to save DWG to the specific folder on your server?
Are you able to save drawings from AutoCAD to another folder on the server?
What happens if you copy DWG to this specific folder in Finder and than open it in AutoCAD? Is the file marked as "read only"?

When you edit drawing in AutoCAD it creates some additional temporary files in the working folder, but Adobe Reader - not.

Maxim