Ayuda en línea Instituto Cervantes FAQ Common Problems Current: Opening a Book Opening a Book I have multiple e-reading apps installed on my tablet. How can I choose which one will open the book I just borrowed? The ebook I borrowed and downloaded from Adobe Digital Editions cannot be transferred to my e-reader. An error message indicates that a permission problem is preventing the file from opening. How do I fix the problem? When I download an ebook on my computer, it doesn't open with the right program. How do I change the default program for ebooks? Error message: Oops! Unable to open this document. This document is protected by Adobe's Digital Rights Management (DRM) and cannot be opened with your Adobe ID. Log in with the authorized Adobe login and try again. ×