As advised on another post, you need to use Dropbox in connection with Sync. Sync only works with ONE computer and ancestry tree. Dropbox syncs the two computers.

Computer A syncs to B via Dropbox
Computer A syncs to ancestry tree via Sync

Computer B syncs to A via Dropbox
Computer A syncs to ancestry tree via Sync

Ancestry tree syncs to Computer A via Sync
Computer A syncs to B via Dropbox


See:

http://boards.ancestry.com/topics.software.famtreemaker/8447...