Thanks for detailed information!
My Win7 admin account didn’t (and doesn’t) have the “credentials” to delete empty COMODO folder from Scheduled Tasks (emptied by CIS Uninstaller) in betweeen clean reinstalls, and neither CIS Uninstaller could remove it, maybe this is the reason of this error with policies during install v7036? Main Administrator account is disabled and I didn’t try this way yet. I’m aware that my OS isn’t the freshest there is (lasts already a couple of years but it’s stable)…
For me, over-installing on 6882 didn’t work (policy error), nor did standalone install. Also online install threw this error. I used CIS uninstaller in between every time, to be sure I’m starting clean. Importing config works from 7036 onto 6882 and the other way around as well. But internal updating from 6882 to 7036RC was the only option for me to be able to use the newest CIS for now.