IceDragon 15.0.2.0 Security Settings Malfunction

Re: IcsDragon:
I like Ice Dragon but since I installed the latest version I am unable to get any response from the advanced>encryption page None of the icons on the page are resposive. This leaves me no way to update CRLs,or manage Certificates or any related matters on the page. I have uninstalled and reinstalled the program. Since it is only this one component that seems inoperative, I doubt that it is due to any of my system or firewall settings. When I attempt to import CRLs files from

crl.comodoca.com/COMODOCertificationAuthority.crl

directly throu the browser, I get an error message and the file will not even download.
Any suggestions would be appreciated.
Use XP Home Edition

Hello,

Please attach a screenshot with all the installed extensions, themes and plugins. Also add a screenshot with the error message.

Thank you.