Can't Save Illustration: ID: -5000

Hi. We've upgraded to Illustrator CC recently and when trying to re-save an .eps file to our server we get the following message: "Can't save the illustration. You do not have enough access privileges. ID: -5000." This occurs even though my administartor has granted me full access and privileges, and only happens to Illustrator EPS files. Any help would be appreciated. Thanks!