Publishing in AICC returns blank slides

I have a course that has some hidden slides. If I publish in SCORM 2004, in preview, all slides appear and function appropiately. However, our LMS requires puclishing in AICC. When I publish in AICC the preview shows the first couple of slides, then blanks for a few slides (even though menu.nav advances) then back to content.

CAche, coodkies, etc are cleared. Thoughts?

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