inconsistent beaming...

[c10221]

hi all,

i'm using lilypond 2.1.0 on debian and i'm having a problem with beaming. i was
typesetting some chorales for four trombones and ran into some beaming
inconsistencies. everything i'm talking about can be seen in the pdf file at
http://homepage.uibk.ac.at/~c703284/chorals.pdf.

basically the main problem is that some eighth notes on beat four of a measure
are not beamed. if i manually beam them, then the beams are not created equal on
the same notes (page 1 of the pdf, in the fourth bar of the third voice and the
second to last bar of the third voice -- both times [g8 f8]).

on page 2 in the second to last bar the problem i am talking about can be seen
in voices 1, 3 and 4.

the other problem i'm running in to is that i'm getting lots of warnings
regarding bar-check failures at -3/4 and -1/4 ... (you can check this with the
file http://homepage.uibk.ac.at/~c703284/chorals.ly). the bars are all ok, and
if i generate the parts 1 by 1 (not in score) then the bar-check warnings are 
gone.

help anyone?

regards,
simon b. 

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