Hi,
I updated in the end to 2.1.2. Seems to have worked OK......
I did give plenty of time after the "please restart" message came up before I did so.....
However, I did update to see if a problem I am hitting with MIDI SYSEX and the dump messages for the Program Edit buffer was resolved by the latest. No; the problem is still there.
The attached report is what I sent to Sequential via a support request to describe the issues, which may be of interest with those with a low level interest in MIDI.