I have had success using Treesync until my hard drive crashed recently. I've installed everything seemingly the same way. Updates are fine (to the 723 version) and I can use FTM with no troubles. But now I can't sync. I don't use Ancestry.com to update my tree. The only reason I sync is to share with my sister, the only invitee I had. It's not worth it any more. If they do come up with a paid update some time in the future they'll have to let me try it for free before I pay them any more money.