Hi Helen, thanks for your reply. it didn't work out but at least I knew that it should work, theoretically. In the end I just uninstalled btsync, deleted the folder in Appdata/Roaming, deleted the folder in Program Files(68), killed and restarted the exporer (which I had to do anyway to be able to delete the dll files) and then finally reinstalled btsync. And: now it works. This is a relieve since partial syncing doesn't really do the trick if one can't select individual files.