Ver 1.6.0: No StaffSpacing wishes found

[Alois Steindl]

Hello,
after a longer pause I tried to use lilypond again; since my TeX-installation 
had changed, I decided to upgrade lilypond to its latest available version 
(1.6.0 in the cygwin distribution) [also tried to install it in Redhat 7.3, 
but that would make a different story]

After heavy reconfiguring (I just had installed LiveTeX on the machine, and 
there are some clashes, which needed some investigation to circumvent, quite 
prominently the builtin kpathsea-library) lilypond is now able to find all 
necessary files and call the proper programs.
But it gives me strange error messages like the following (for the file 
les-nereides in the documentation):
>> Running LilyPond...
>> GNU LilyPond 1.6.0
>> Now processing: `les-nereides.ly'
>> Parsing...
>> Interpreting music...
>> /home/asteindl/musik/les-nereides.ly:21:17: warning: Junking request: 
`Key_change_req':
>>     \key a \major
>>                  
>> 
>> /home/asteindl/musik/les-nereides.ly:21:17: warning: Junking request: 
`Key_change_req':
>>     \key a \major
>>                  
>> [5]
>> Preprocessing elements... 
>> Calculating column positions... programming error: No StaffSpacing wishes 
found (Continuing; cross thumbs)
>> programming error: No StaffSpacing wishes found (Continuing; cross thumbs)
>> programming error: No StaffSpacing wishes found (Continuing; cross thumbs)
>> [3]
>> paper output to `les-nereides.tex'...
>> 
In my own example I get much more of these messages and the text isn't 
centered below the notes, but left aligned.

So my (not really) short questions:
Is the problem
a) in my configuration,
b) in the source file,
c) some feature of lilypond?

Thanks for any hints!
Alois