Comodo Internet Security Entry point not found

I am using Comodo Firewall and want to have antivirus protection too, so I downloaded Cispremium_Installer.
When I try toinstall the program, I get an error message saying
The procedure entry point_except_handler4_common could not be located in the dynamic link library msvcrt.dll
what should I do?
Thank you
Best Wishes,
Bernard ???

since you already have the firewall installed you can add the antivirus by going to the control panel and click comodo internet security then click change then when it asks which components you want installed select the antivirus then it will ask for a reboot