The newer version of Comodo is rather annoying. so irrationally set up that it hurts.
You can't exclude or entrust a file
from the scanning window. When Comodo automatically encounters a 'threat' via the real-time scanning, there are no longer options to do so. You can only choose to quarantine it or ignore it for the time being o_O. Why'd you change it that way?
The
ONLY way I can make a falsely detected threat become a trusted or excluded file, is by MANUALLY locating the file where it is,
BEFORE it recognizes the file (again. I even had to reboot), right click and choose 'Scan with comodo',
then there's a panel for submitting to Comodo as false alert and entrust the file.
Because I can't select and perform the 'submit as false alert' or 'add to trusted files' withn my event log OR from my quarantine menu! (or maybe I can, there's a submit button, but when I click it, it just says 'failed to open file' because the program itself has made the file unable to handle).
The above described way was the only way I could make Comodo shut up and let me install my game. This is insanely annoying.

A screen cap. The needed options accessible from the manual scan results.