tremolo repeat

[Thomas Scharkowski]

Hello list,

example 1 works as expected:

% begin example 1
\version "2.2.0"
\score {
\notes {
\key g \major
\time 2/4
\clef F
g8 g g g |
\repeat "tremolo" 4 g8 |
}
}
\paper {}
% end example 1

example 2 produces a warning:
% begin example 2  
\version "2.2.0"
\score {
\notes {
\key g \major
\time 2/4
\clef F
g8 g g g |
\repeat "tremolo" 4 g8 |
\repeat "tremolo" 4 g8 |
\repeat "tremolo" 4 g8 |
\repeat "tremolo" 4 g8 |
}
}
\paper {}
% end example 2

warning message:
tremolo.ly:9:no one to print a tremolos:
tremolo.ly:10:no one to print a tremolos:
tremolo.ly:11:no one to print a tremolos:

The printout is correct, but in a slightly bigger project exactly the 
same lines "\repeat "tremolo" 4 g8" produce this warning and the 
following error message, which I, needless to say, do not understand:

--
assertion "d==1 || d== -1" failed: file "/netrel/src/lilypond 
2.2.0/flower/include/drul-array.hh", line 27
Signal 6


lilypond: error: LilyPond failed on input file 
/home/Thomas/lilypond.dir/Mandoline/Barbella-Duos/5c_score (exit 
status 134)
--

Thank you,
Thomas

lilypond 2.2.0, cygwin