Why cant i install this Comodo CIS

I have alawys do ne new versions of CIS through the updater. However i had a crash and downloaded CIS as a fresh installation. However i can not install it. I get the following screen. It says agree and upgrade.

If the upgrade installer works like the normal installer you can choose cancel in that screen. With the normal installer CIS is already installed at that point. It is a very confusing screen.

Cancel didn’t work. But if i click agree and upgrade it would install CIS.