Rated 4 out of 5 stars

Fails to recognize Google Apps addresses as Google addresses which have contacts to synchronize on the first display.

But, if I open the gContactSync wizard again, I can select the account.

This review is for a previous version of the add-on (2.0.4). 

Could you send me the log file over e-mail? Are you sure you entered the exact same e-mail address in the wizard and the OAuth page from Google?