I have a course originally developed with PPT 2003, then upgraded to PPT 2007 and developed in Presenter 7. When I go to publish in Adobe Presenter 8 (.ppt in compatability mode) when I publish, I just get the gray screen with the Adobe spinning green icon. All of my course have worked prior to upgrading to Presenter 8. I am not receiving any error messages. I've tried saving as .pptx and that does not resolve.