Lilypond is not happy with GUILE 1.6.8

[Eyolf Ostrem]

I've just upgraded from guile 1.6.7 to 1.6.8, and now lilypond is not happy. 
Here's the output when I try to run lilypond on files that worked just the 
other day:

GNU LilyPond 2.9.3
Processing `testfile.ly'
Parsing...
/usr/share/lilypond/2.9.3/ly/music-functions-init.ly:102:1: error: GUILE 
signaled an error for the expression beginning here
#
 (use-modules (scm display-lily))invalid module name for use-syntax ((srfi 
srfi-39))

/usr/share/lilypond/2.9.3/ly/music-functions-init.ly:102:5: error: syntax 
error, unexpected '-', expecting '='
#(use
     -modules (scm 
display-lily))/usr/share/lilypond/2.9.3/ly/music-functions-init.ly:48:56: In 
expression (display-lily-init parser):
/usr/share/lilypond/2.9.3/ly/music-functions-init.ly:48:56: Unbound variable: 
display-lily-init


I'm not positive that the guile upgrade is to blame, since there has been a 
period when I haven't used LP, but the errors turned up in the meantime.
Any help would be appreciated.

Eyolf