Please help, cant install free firewall v6

I have windows 7 sp1 64bit & free Comodo firewall 5.12 version. I decided to update to Free Comdo firewall V6. Uninstalled old firewall, started to install new version and after reboot installation continued bu t got message “present installer state cannot be saved to properly resume installation after reboot”. That’s it. Other attempts to install new version leads to same message.


Please try following the advice I give in this post to reinstall Comodo Firewall.