Hello
I have some problem with installation of COMODO Firewall Pro. During installation if I want to change ‘Destination Folder’: http://img296.imageshack.us/img296/545/destinationfoldersg2.jpg I have error: http://img296.imageshack.us/img296/1450/erroruz7.jpg. Why ?
Regards
Hey emil.sekula & Welcome!
First, The new installer (3.5 update) is here. and also, If you install full CIS make sure you don’t have any other Firewall or AV Installed. If you choose to only install the Firewall then its OK to have another AV.
And be sure to download the right 32 or 64 bit version. 
Cheers,
Josh