After downloading Acrobat 9 Pro Extended and creating a presentation (from PowerPoint) with Adobe Presenter 7, you’ll see that there is no preview. Instead there is a blank white page in the preview (see Figure 1).
Figure 1: Notice that the PowerPoint and the PDF document created from Acrobat have a preview, but the document created from Adobe Presenter does not.
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To create a preview, just make a single one page PDF (typically of your first slide) and then use select Document > Replace Pages in Acrobat and select the one-page PDF that you want to be the preview.
Figure 2: Select Document > Replace Pages in Acrobat to create a preview
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Next, save the file and now it will appear with a preview – in the operating system and/or in a PDF Portfolio.
Figure 3: All documents now have a preview displayed
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