I recently upgraded my Sonos system from Connect to Port. As a result, I had to upgrade from S1 to S2 as well. Before all this, I had no problem accessing files on the external fileshare HD that I have connected to the USB port of my Asus AC5300 Router. In the new situation Sonos won't even let me restore my music library from the fileshare HD. After a few minutes of apparent indexing it just quits and says: “The device where the music files are stored may not be powered on,” (it is) “the path may have changed” (it didn’t). This is very annoying, since it means I can no longer access my music collection (painstakingly converted from thousands of CDs) the way I could before. Does anyone recognize this problem?