Firstly, congrats to the team - this software fills a genuine need and easily outperforms any other option I've tried. And yet, we're told to regard it as alpha sotware - should we be nervous (today, we sync your PCs.... tomorrow, the world!)? I have used it to sync my various media files (about 2Tb of ebooks, music, video, etc.) between 2 PCs. Last weekend, I re-formatted and re-installed OS and attendant sotware on both PCs. Both PCs are now running Windows 8 x64. On both PCs, OS and software is on one drive, media on another (so, data only). I am in the process of setting up BT Sync again and was wondering - is this necessary? Is there a way to backup/restore BT Sync so one doesn't have to set it up again in such an instance? In my case, my data is stored separately, I have the secrets originally generated and the .SyncID files are still present.