How to validate the comodo firewall pro?

hey, I’m a newbie…
so can please someone tell me how to validate our comodo software…
lately, I wanted to update the firewall but it always says: ‘Error 112: Unable to copy file: [ at ]dosmz.cav. Please contact support’
what should I do? (:SAD)

First of all what version of Comodo are you using? What OS? If your using .295 there are no updates cause thats the latest version. If not just uninstall Comodo and install the latest version. (B)