Using the web scan feature of my HP PSC 750, I scanned b/w text into a PDF. The resultant file is readable in Acrobat 7.0.9, and also in Adobe Digital Editions 1.0.467, and on a Sony Reader PRS-505. However, when I crop the documents to remove dark margins, the resulting PDF is then unreadable on the Sony Reader. The text is there, but it is 'white' or blanked out. When I search text, the highlights appear where text should be, since the scan is also OCR. It also has the bookmarks I typed in. Has anyone else encountered this situation?