Grob TupletBracket ended before I expected it to end

[Frédéric Bron]

Hello !

This new version of lily is interesting. Thanks to all developpers. 
Could somebody tell me what is the following error ? The output is 
allright to me.

Frédéric

> ly2dvi -P test.ly
ly2dvi (GNU LilyPond) 1.8.0
Running /usr/bin/lilypond...GNU LilyPond 1.8.0
Now processing: `test.ly'
Parsing...
Interpreting music...[8][16]programming error: Skipped something?
Grob TupletBracket ended before I expected it to end. (Continuing; cross 
thumbs)
programming error: Skipped something?
Grob TupletBracket ended before I expected it to end. (Continuing; cross 
thumbs)
[19]
Preprocessing graphical objects...
Calculating line breaks... [3][6][9][12][15][18][20]
paper output to `test.tex'...
writing header field `title' to `test.title'...
writing header field `subtitle' to `test.subtitle'...
writing header field `composer' to `test.composer'...
writing header field `instrument' to `test.instrument'...
writing header field `piece' to `test.piece'...


Analyzing test.tex...
Running latex...
Running dvips...
DVI output to `test.dvi'...
PS output to `test.ps'...

-----------------------------------------------------------
Frédéric Bron (address@hidden)

\header {
        title = "Variations"
        subtitle = "sur un thème de Haydn"
        composer = "Johannes Brahms"
        tagline = "Ensemble de clarinettes de Voiron"
}
\version "1.8.0"

\include "english.ly"
\paper {
        papersize = "a4"
}

global = {
}

\include "paper16.ly"

ClarinetteIVarIOriginal = \notes {
        \property Voice.tupletSpannerDuration = #(ly:make-moment 1 4)
        \key bf \major
        \time 2/4
        \relative a' {
                \repeat volta 2 {
                        r4 r8 a\f-(                                             
% 1
                        bf-\< df e g  a c ef gf-\!                              
% 2-3
                        f \> d bf a-)-\!                                        
% 4
                        \times 2/3 { g\p-( \> bf ef,-)-\! } r4                  
% 5
                        \times 2/3 { f8-( \> bf d,-)-\! } r4                    
% 6
                        R2                                                      
% 7
                        \times 2/3 { ef8-(-\< d c bf a c-)-\! }                 
% 8
                        r4 \times 2/3 { r8 bf'\f-( a                            
% 9
                        g bf ef d f bf,  a c ef, d f bf                         
% 10-11
                        g' f ef d c f-)                                         
% 12
                        r af,_\markup{\italic{ dim. }}-( g f af d,-)            
% 13
                        r ef'-( d c ef a,-)                                     
% 14
                        r af,-( g f af d,-) }                                   
% 15
                        r4 \times 2/3 { r8 f''\p-( ef                           
% 16
                        d-\> f bf,-) } r4                                       
% 17
                        \times 2/3 { d,8-( f bf,-)-\! } r4                      
% 18
                        d'2-\fermata                                            
% 19
                }
        }
}

ClarinetteIVarI =    \notes { \modernCautionaries \clef treble \transpose c d 
\ClarinetteIVarIOriginal }

\score {
        \notes \context Staff < \property Score.skipBars = ##t \global 
\ClarinetteIVarI >
        \header { piece = "Variation I" instrument = "Clarinette 1" }
}