Incorrect pitch notation for minor key in def-score

Hi,

I'm seeing that some of my pitches in OMN are getting re-spelled in def-score. The score below shows that in a score in d minor, the c-sharps are notated as d-flats. If I just view the OMN as a snippet, it's rendered properly. Is there some function I can apply or some parameter in def-score I can pass to force the accidentals to be rendered exactly as I specify in the OMN?

My score:

(progn

(setf main-lh-ver-01 '( (q d2 stacc h d3f3a3 ten) (q e2 stacc h e3g3cs4 ten) (q f2 stacc h f3a3d4 ten) (q fs2 stacc h eb3a3c4 ten)

(q g2 stacc h d3g3bb3 ten) (q gs2 stacc h d3f3b3 ten) (q a2 stacc h e3a3cs4 ten) (-h.)))

;(gen-repeat 2 main-lh-ver-01)

(def-score waltz-score-example (:title "Waltz Chaconne"

:key-signature '(d minor)

:time-signature '(3 4)

:tempo 160

:layout (bass-layout 'lh))

(lh :omn (gen-repeat 4 main-lh-ver-01)

:channel 1

:sound 'gm

:program 'acoustic-grand-piano)

)

)

If I view the Snippet here:
(setf main-lh-ver-01 '( (q d2 stacc h d3f3a3 ten) (q e2 stacc h e3g3cs4 ten) (q f2 stacc h f3a3d4 ten) (q fs2 stacc h eb3a3c4 ten)

(q g2 stacc h d3g3bb3 ten) (q gs2 stacc h d3f3b3 ten) (q a2 stacc h e3a3cs4 ten) (-h.)))

it's rendered correctly:

In the score rendered with def-score, I get this:

It's probably something obvious, but I've searched the forum and RTFM'ed with little success.

Thanks!

Paul