1 Reply Latest reply on Aug 8, 2011 10:39 AM by Claudio González

    Nook Study


      I have Window's XP and use a Nook Study.  I recently changed my default adobe reader from Adobe Acrobat 8 to PDF XChange Viewer.  Now when I open my Nook Study, I get an error message saying "Sorry we are unable to open this book.  Your Adobe Certificate has been corrupted." 


      Barnes and Nobles says that this is an Adobe problem and has not helped at all.  Do you know how to fix the problem so that my Nook will work again?