I just re-installed SCAMP after a long break, along with python-rtmidi, abjad, and lilypond. Newest versions of all of them. A SCAMP test script sounds fine, but it gives error messages about pythong-rtmidi and lilypond. A standalone test program in Frescobaldi and lilypond works. I can provide the error messages and version numbers if needed.
Should I be using older versions of python-rtmidi and/or lilypond? My OS is Windows 11.