Never completes a sync Rated 4 out of 5 stars

Never able to complete a sync. I have used 2 different imap servers and different address books yet it always hangs at some point and never completes.

UPDATE: I completely removed and reinstalled. I also created a new sync folder and disabled my firewall. One of these steps fixed the problem but at this point I am not sure which one. Just completed my first sync from home/office and all appears well so I will raise my rating. Thanks.

This review is for a previous version of the add-on (0.6.0).