Rated 3 out of 5 stars

Good concept, but you need to open the address book tab each time after closing the tab or restarting TB, from the add-ons option.
Please address this and its a 5 star add-on!!

This review is for a previous version of the add-on (2.0). 

This behavior does not occur with my linux OS. Maybe you should check your system settings to see if this is the reason for the error.