This happened because rhythmbox and gvfs cannot both access the same MTP device at the same time. The MTP protocol doesn't support multiple clients. Rhytmbox's attempt to communicate with the device kills gvfs' session, resulting in this.
You should explicitly unmount the device in Nautilus before attempting to interact with it through Rhythmbox.
This happened because rhythmbox and gvfs cannot both access the same MTP device at the same time. The MTP protocol doesn't support multiple clients. Rhytmbox's attempt to communicate with the device kills gvfs' session, resulting in this.
You should explicitly unmount the device in Nautilus before attempting to interact with it through Rhythmbox.