Mats,
For what it’s worth, I just updated to OS 15.7 yesterday afternoon. Today I ran
a test file with Frescobaldi 4.0.4 and it generated the pdf without a hiccup. I
tried the same, launching Fresco from the Terminal app, and again the pdf was
generated.
Stan
> On Sep 21, 2025, at 3:41 AM, Mats Behre <mailli...@mbehre.se> wrote:
>
> Hi,
>
> After upgrading my OS to 15.7 I fail to generate PDFs from lilypond, the
> error I get is like
>
> GNU LilyPond 2.24.4 (running Guile 2.2)
> Processing `AltoSax.ly'
> Parsing...
> Interpreting music...[8][16][24][32][40][48][56][64][72]
> Preprocessing graphical objects...
> Finding the ideal number of pages...
> Fitting music on 1 page...
> Drawing systems...
> ...2.24.4/ly/init.ly:65:2: error: Guile signaled an error for the expression
> beginning here
> #
> (let ((book-handler (if (defined? 'default-toplevel-book-handler)
> Throw to key `system-error' with args `(("open-fdes" "~A" ("Permission
> denied") (13)))'.
>
> Any ideas how to solve this?
> It seems to come from python somehow, but when I try 'which python' I don't
> get anything, so how does lilypond start python - I guess it can have been
> affected by the upgrade ...
>
> Thanks,
> Mats
>
>
