Can you say what you did in compressor (step by step)?
I would be highly tempted to just do this in FCP by adding all of the images into the timeline with the default transition between them, then export this out as a single piece of footage. You should be able to encode that to MPEG2 in Compressor and bring it in to DVDSP from there with no problems.
FWIW older versions of QT used to open an 'image sequence' which means you point to a folder of sequentially numbered images and set how long each should show for. QT would stitch it all together (no nice transitions, and make sure all the images are in the same orientation) so that you can export as a piece of video. Certainly in QT pro v7 and earlier, but sadly not in QT X I don't think.
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lafcpug mod