Originally Posted by dwanthny
What is the creation date of the folder and file?
Did you ever try out calibre before?
Answers to your questions:
(1) C:\Calibre v0.8.4\Library\metadata.db
The date of creation of both the folder and file is October 30, 2011.
I uninstalled the previous version, downloaded the latest version, double-clicked to install the latest version.
The folder Calibre v0.8.4 also appeared with the previous versions that were installed on my PC. I didn't report the bug because I didn't know there was a forum for Calibre until a few days ago.
(2) Yes, I did use Calibre before. It was in March this year that I came to know the availability of this software.