ERROR: In procedure assoc

[Hans Aberg]

Using LilyPond 2.7.3 on Mac OS 10.4.2, I get the following error:

Processing `/Users/foo/Music/LilyPond/Rachenitsa.ly'
Parsing...
Interpreting music... [8][16][24][32][40][48][56][64][72][80][88][96] 
[104][107]
Preprocessing graphical objects...
Calculating line breaks... ERROR: In procedure assoc:
ERROR: Wrong type argument in position 2 (expecting association  
list): #<freed cell 0x2a04650; GC missed a reference>

The error appears as follow: I use
  \time 7/16
  #(override-auto-beam-setting '(end * * 7 16) 4 16)
to automate beams. Then, when removing the beaming [...]  
successively, I get the error message above, when removing the last  
one at the very end. If I add another measure, I do not get any  
error. So it seems that I somehow have hit a bad allocation of sorts.  
I attach the file by which this happened. If the last line containing  
a measure is changed from
    a16 b b8\trill  b16 a b    b8-. b-.  b8.\trill
to
    a16 b b8\trill  b16 a b    b8-.[ b-.]  b8.\trill
or
    a16 b b8\trill  b16 a b    b8-. b-.  b8.\trill    b8-. b-.  b8. 
\trill
I do not get the error.

  Hans Aberg