New problem. Outside of Rosegarden, but probably related.  If this does not belong in this forum, let me know, and I apologize in advance ...

When I start Audacity, which was functioning correctly, I get the following error:
'There was an error initialising the audio i/o layer. You will not be able to play or record audio>

Error:Host error'

Possibly an indicator of the Rosegarden problem?