Aide en ligne - Cantook Station 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 ×