I am not sure what went wrong but after one day it again started to work properly anyways thanksfrancois wrote:You should rebuild vbox anew or submit your output on the vbox forum.

I am not sure what went wrong but after one day it again started to work properly anyways thanksfrancois wrote:You should rebuild vbox anew or submit your output on the vbox forum.
Thanks a lot for your help but it seems that the main problem was that the application has to be used as root only to decrypt a file an idea of the calibre problemtome wrote:@ anandisrocking007
Maybe libselinux module will help - https://www.dropbox.com/sh/7elwcgmk5mwtmme/FmFMsdUIO8
Thanks for the calibre reader