Acciaccatura giving errors

[Peter Toye]

An acciaccatura is giving 14 "programming error: mis-predicted force" errors and corrupt layout. The former I can live with the latter I can't.

The layout errors in the complete score are extremely wide spaces between the systems and a line with an extremely wide right margin on the page with the offending acciaccatura.

I've tried to produce an MWE, and one is appended, but it doesn't show the layout errors which for me are a complete show-stopper. It's a slightly out of date version of LilyPond, but I'm also having trouble using convert-ly in Frescobaldi.

\version "2.19.52"

\language "english"

\score {
 
  \transpose c a,        % ***** comment out this line and it works OK

  \new Staff = "PianoLH" {
    \clef "bass"
    \relative {

      \time 4/4
   
      \clef "treble"        % ***** comment this out and it's OK
   
      c'1
      \clef "bass"
      \resetRelativeOctave a,,
      \acciaccatura a8 c'1|
      c1
   
      % ***** comment out the following text and get fewer errors
 %%{
      {    
        c1 c c c
      }
%}
    }
  }

  \layout {
  }
}



 
Regards,

Peter
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