> Are you using \bookOutputName / \bookOutputSuffix for controlling the > names of the pdf files?
No. The PDF never appears, even with the most basic input like:
\version "2.20.0"
{ a }
I guess, the problem is related to the fact that I did not install
Frescobaldi properly but just run the Python file. But starting the
installed version does not open up Frescobaldi at all...
Joram
