strange suggestAccidentals behaviour

[James E. Bailey]

So, I came across this as I was typesetting some bach:
\include "deutsch.ly"
I = \relative g' { \clef treble
        \set suggestAccidentals = ##t
        r2 r8 g16 f es4~        | %1
        es8 d c2.       \bar "|:" %2
        r16 d es f g4~ g8 a h4~ | %3
        h8 c d4~ d16 g f e d4~  | %4
}

II = \relative c' {\clef treble
        c4~ c16 h c d es4. f8   | %1
        g4~ g16 es f g as4. r16 c,      \bar "|:" %2
        h4~ h16 g h d g4. r16 a | %3
        fis4.\trill r16 e f4. r16 g     | %4
}
\score {
        \new StaffGroup << \new Staff \I \new Staff \II >>
}

does this produce acceptable output for anyone, if so, how? it's  
horribly mangled on my end.