MIRC ( Comodo Thinks Its A Virus ) PLEASE HELP

Hi, I began using comodo yesterday for the first time, Version along with Anti virus build version at first all appares to be ok, but i cannot use Mirc at all. As soon as i open MIRC it quarenteens the .exe file. and tells me its a virus.
I want to continue to use Comodo but i im frustrated as to why it thinks Mirc is a virus.
Please help