wrong type argument

[Stefan Thomas]

Dear community,
when compiling my most recent score, I get an strange error message, taht I don't understand. And I don't get any output!

Any idea, how I can switch it off?

> GNU LilyPond 2.13.3
> Processing `xeno04.ly'
> Parsing...
> warning: transposition by bis makes alteration larger than double
> warning: transposition by bis makes alteration larger than double
> warning: transposition by bis makes alteration larger than double
> Interpreting music... [8][16][24][32][40][48][56]
> Preprocessing graphical objects...
> Interpreting music...
> warning: cannot find or create new `Dynamics'
> warning: cannot find or create new `Pedal'
> programming error: (de)crescendo on items with specified volume.
> continuing, cross fingers
> MIDI output to `xeno04.midi'...
> Solving 1 page-breaking chunks...[1: 2 or 3 pages]
> Drawing systems...<string>:9:365: In procedure ly:stencil-extent in _expression_ (ly:stencil-extent this-stil 0):
> <string>:9:365: Wrong type argument in position 1 (expecting Stencil): ()