I have spent hours with Dropbox Text Support and keep getting the run around. I am trying to sync my gmail with dropbox and I keep getting this error message. I am using the same e-mail address as my primary and the one I am logging into. Google is even sending me a confirmation email that Dropbox was granted access to your Google Account. However there seems to be an error in the message. I even did this after clearing my cookies and cash. Is someone able to help.