incompatible stem (type = 16)

[karim haddad]

Hello list

In this .ly file (very unconventional) i have a problem with :

/Users/hyperion/Desktop/lilbug/6.ly:72:0: warning: adding note head  
to incompatible stem (type = 16)

c'1*4/21~

although c'1 is a whole note and should has no stem

Even weirder, this works with the 2.10 version which  reports the error,
but in the latest version 2.11.20-1 i have the error and lilypond  
just hangs...

Any ideas ?

6.ly
Description: Binary data

Another thing but this is no bug i presume . when i call lilypond  
fron my terminal i get


hyperion$ lilypond
Rebuilding font cache
This may take a few minutes.GNU LilyPond 2.10.20
error: LILYPONDPREFIX is obsolete, use LILYPOND_DATADIR

and this when i try version from version.

I tried to look for this variable, but didn't find it
I defined it in my .bash but no way?

thanx

Karim