title_body: Why can't I remove books from my device? I used to be able to remove books from my Sony PRS-T1 reader using Calibre (either one by one or en masse). I am running a fully updated version of Windows 7, and I have the latest version of Calibre (1.20), and tried today to remove some books (both one at a time, and multiples at a time), and I keep getting the following error when I try: 
  
  
    calibre, version 1.19.0 ERROR: Error: Error communicating with device
    
    [Error 5] Access is denied: u'M:\Sony_Reader\media\books\The
    Zombie Survival Guide_ Complete Prot - Max Brooks.epub'
    
    Traceback (most recent call last):   File
    "site-packages\calibre\gui2\device.py", line 85, in run   File
    "site-packages\calibre\gui2\device.py", line 596, in _delete_books
    File "site-packages\calibre\devices\usbms\driver.py", line 345, in
    delete_books WindowsError: [Error 5] Access is denied:
    u'M:\Sony_Reader\media\books\The Zombie Survival Guide_ Complete
    Prot - Max Brooks.epub'
  
  
  While the filename listed will change (depending on the book I am trying to delete), the message is the same - I can't delete ebooks from my device. 
  
  Is there anything I can do to solve this error?
upvoted_answer: It might be that the TRS-1 plugin for Calibre is broken, or that Calibre deletion is broken in the version you have. I would try to delete files outside of Calibre using the steps here, and if that works blame things on Calibre, file a bug-report and wait for the next version.