Acciaccatura beaming

[Palmer, Ralph]

Hi - 

I'm running 2.8.4.1 under Windows XP SP 2.

I'm having trouble getting the beaming to work correctly on an
acciaccatura. I have a preceding measure with tremolos, then a time
change. In the log, I get the following message:

Interpreting music... 
programming error: Stem already has beam
continuing, cross fingers
programming error: Stem already has beam
continuing, cross fingers

If I run the measure with the acciaccatura without the preceding
measure, it looks correct. I've tried using appoggiatura, as well, with
the same results. Here are two snippets, one with the problem, and one
without either the preceding measure or the problem:

Snippet bad:
%%%%%%%%%%%%%%%%%%%%%%
\version "2.8.4.1"
Music = {
      \clef treble
      \key c \major
      \time 3/4

         \repeat "tremolo" 4 { aes32( ^\markup \column {{ "di nuovo" }
{misterioso} } c'32) } \repeat "tremolo" 4 { b32( dis'32) } \repeat
"tremolo" 4 { bes32( dis'32) } \breathe |

         \time 2/4
         \acciaccatura { cis''16[ dis''] } eis''16 gis'' eis'' dis''~
dis'' d'' cis''!8 \breathe |


}

\score {
       \Music
       }
%%%%%%%%%%%%%%%%%%%%%%%%%%

Snippet good:
%%%%%%%%%%%%%%%%%%%%%%%%%%%
\version "2.8.4.1"
Music = {
      \clef treble
      \key c \major
      \time 2/4

         \acciaccatura { cis''16[ dis''] } eis''16 gis'' eis'' dis''~
dis'' d'' cis''!8 \breathe |


}

\score {
       \Music
       }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Can anyone tell what's happening, and/or how I can get the desired
output?

Thanks again for all the help this list has been,

Ralph
+++++++++++++++++++++++++
Ralph Palmer
Energy/Administrative Coordinator
Keene State College
Keene, NH 03435-2502
Phone: 603-358-2230
Cell: 603-209-2903
Fax: 603-358-2456
address@hidden