I have installed Sync on a MacMini and a MacBookPro. I had it working and loved the product. Upgraded machines and now it doesn't work. The folders seem to index, although the number of files does vary. I don't have any devices showing up either. I'm using "predefined hosts", but that didn't help. I've tried to uninstall and reinstall, but that didn't work. I would love to get this working. Any help would be greatly appreciated.