Have you tried deleting the problem charts and then backing up. It would help to narrow the search area down. If this was common, we'd be seeing a lot more reports from users.
Personally, other than the issue with Placeholders, I have never had a problem backing up with Companion. I feel sure it has something to do with one or more charts in your library.
Personally, other than the issue with Placeholders, I have never had a problem backing up with Companion. I feel sure it has something to do with one or more charts in your library.
Graeme
1: Samsung 12.2" SM-P900: Android 5.0.2
2: eSTAR GRAND HD Quad-Core 4G 10.2": Android 5.1
3: Home-built BT pedal
Some of my music here
1: Samsung 12.2" SM-P900: Android 5.0.2
2: eSTAR GRAND HD Quad-Core 4G 10.2": Android 5.1
3: Home-built BT pedal
Some of my music here