I'm using a multiple OS computer ( Windows XP Home & Windows 7 Ultimate). On the WinXp machine I have AVG antivirus running while Win 7 has Microsoft Security Essentials. Since the Calibre Library is common for both OSs and also my Android phone,on which I use Aldiko, I had created the Library on an external 1TB drive that is permanently on and is synced through Dropbox.
Till the previous version I had no problems whatsoever, but ever since I updated the WinXp Calibre version to 0.8.41, I am having trouble opening any of the existing ebooks in my library.
When I open the book, I get the following error:
What could be the problem causing this error, and how do I fix it? This issue is not there when I use Win7