"Suitable email" with Google Integration

Hello All!

In working with the "Check out to google drive" from the webclient, I am getting this error when selecting my user(s):

For the user I have chosen, they have both a corporate email address, a gmail email address, a corporate network login and an alternative network login which is the gmail address.  I am not sure where, or for what the web client is looking for when selecting a user as a person to share the document with.

Attempts to enter a straight up email address work without issue.  Its only the selection of somone from the locations table.  On the main screen, under (1), that is failing; however, using the '+' button (2) and entering in a gmail address works fine.  

Any and all help is greatly appreciated.