lilypond 1.3.3 error (stem directions set already)

[Tim Nowaczyk]

here's the file test.ly and the output error

\include "paper16.ly"  \score {
    \notes
    \relative c'' \sequential {
        b4 g8 a
    }
 
    \paper {
        linewidth = 14.0 \cm; 
    }
}

ly2dvi (GNU lilypond) 1.3.3 executing: lilypond test.ly 2>&1 GNU LilyPond
1.3.3.  [/usr/share/lilypond/scm/lily.scm]
Parsing...[/usr/share/lilypond/ly/init.ly[/usr/share/lilypond/ly/declarations.ly[/usr/share/lilypond/scm/generic-property.scm[/usr/share/lilypond/ly/nederlands.ly][/usr/share/lilypond/ly/chord-modifiers.ly][/usr/share/lilypond/ly/script.ly[/usr/share/lily
Interpreting music...[1] elapsed time: 0.04 seconds Preprocessing
elements... [/usr/share/lilypond/afm/feta16.afm]warning:  stem direction
set already! 
ly2dvi: Lilypond failed: lilypond  test.ly 2>&1

if the "b4 g8 a" is  changed to "b4 g8" it compiles fine.

any ideas?

Thanks,
Tim Nowaczyk