Large black splotches showing up in the framework

[dashsara5]

I just uploaded a powerpoint deck to Capitvate. About 4-5 slides in Captivate are now showing very large black splotches covering the slide and the text and image formatting. Anyone know why these black splotches appeared and how to get rid of them. The powerpoint slides are formatted fine and nothing looks off. 

[RodWard]

Do you have any objects on those slides that are the right size and shape to be causing this issue?  I would look for things like 32-bit PNG files with transparency or perhaps SVG files.  Also possible that you may have some SWF files  in the original PPT that are now not compatible with the HTML5 output in Captivate.