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					Originally Posted by  cgsmom
					 
				 
				I... 
Added on edit:  I tried to open the PDF file with ADE and it shows the book title and author but all the pages are blank.  Therefore, I know it is a problem with the file and not the Tablet. ... 
			
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 FALSE CONCLUSION!
The Nook uses Adobe Digital Editions software. Your test merely shows that there is likely a limitation in both the Nook's version and the desktop version. While it doesn't rule out a fault in the PDF file, it also doesn't show that there is no fault in the reader.
You are very likely running across a limitation in the PDF support in the ADE software since the file displays properly in Adobe Reader. The PDF file is likely a perfectly legitimate PDF.
I encountered the same symptoms with a PDF that I downloaded from the Internet Archive a while back. It displayed find in Adobe Reader on Windows but most pages were blank when viewed on my Kindle 3. Poking around with the PDF, I discovered that it used multiple layered images to display scanned text over an image of old paper pages.
The fix was to print the PDF from Adobe Reader using a PDF virtual printer driver (I use 
PrimoPDF, available free, but there are a number of others you could use). This created a "flattened" PDF that displayed fine on my Kindle. The resulting file was also much smaller.