Re: 1.6.5 - is this a memory issue? or my mistake?

[Mats Bengtsson]

> Adding note head to incompatible stem (type = 8):
>  r1 s1 \stemDown f
>                          ,2 s2


This typically happens when you have two separate lines of
music in the same Voice context. What you probably want to
do is something like

<\context Voice=upper {\voiceOne c4 d e f | g a b c}
 \context Voice=lower {\voiceTwo c2 f | g e }>

What's important here is the different names given to the
two voices. The macros \voiceOne and \voiceTwo are described
in the tutorial and in the reference manual.

    /Mats