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From: | Craig Dabelstein |
Subject: | Re: Error message |
Date: | Mon, 24 Jun 2019 16:15:21 +1000 |
> On Jun 23, 2019, at 1:38 AM, Craig Dabelstein <address@hidden> wrote:
>
> Hi Lilyponders,
>
> Can anyone tell me what this error message means when trying to compile a file?
>
> Drawing systems.../home/gub/NewGub/gub/target/darwin-x86/src/lilypond-git.sv.gnu.org--lilypond.git-stable-2.20/flower/include/drul-array.hh:35: failed assertion `d == 1 || d == -1'
> Exited with exit status 1.
This is my least favorite kind of error! Whenever I have these, it often concerns beaming, especially when LP is trying to beam more than two notes but, because of a misplaced octave or perhaps a clef change, it can't draw a satisfactory beam. Sometimes, just turning off beaming in 4s can allow the file to compile so that you can start investigating.
http://lilypond.org/doc/v2.19/Documentation/notation/beams.en.html
If that doesn't work, and if the file has been compiling fine right along, I'll assume the issue has to do with the part most recently entered. I'll stick a %} at the end of the part and then pick a reasonable point to put a %{ and, with that section now "turned off", I'll see if the piece can compile. If not, I keep moving the %{ earlier and earlier until it does.
Hope this helps,
Dan
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