When I Preview or Publish my Project it shows a blank white screen

I created a projected, successfully published it as a SWF and everything worked fine. Now when I go back to edit and try to preview the project or individual slides it just shows me a blank white slide, even the captivate skin with toggles that I chose are missing. The toggles for the preview at the top left corner remain. When I preview as HTML5 in a web browser the project works fine. I tried copying the first slide to a new project and previewing to see if somehow another slide may be corrupting the project and that first slide still malfunctions on the new project. This is absolutely nervewracking, I really don't want to have to do all 23 slides all over again!