Accordion registration problem

[Menu Jacques]

Hello folks,

I tried the following, which seems OK to me:


\version "2.19.55"

#(use-modules (scm accreg))

{
  \time 4/4
  c'4 \discant #"210"
}


but Lily issued the following error message:

 Starting lilypond 2.19.55 [Discant problem.ly]...
Processing `/Users/menu/Desktop/Discant problem.ly'
Parsing...
Interpreting music...
Preprocessing graphical objects...<unnamed port>: In procedure ly:assoc-get in 
expression (ly:assoc-get (quote dots) register):
<unnamed port>: Wrong type argument in position 2 (expecting list): #f
Exited with return code 1.

Changing the order of the \discant and c’4 leads to the same error message.

Thanks for your help!

JM