Repeating a post I made in another thread, I have a similar issue. My setup is 2 desktops, 1 notebook, and a QNAP NAS. The desktops were set up with BTSync first and sync with the NAS; this seems to work fine. When I try to add the notebook to the mix, it cannot see any of the existing sync folders, BUT if I create a new folder pair between the notebook and NAS that (and only that) works. I cannot figure out how to get the notebook to sync the existing shared folders with the NAS.