Launching cross fire

When i launch crossfire it does not complete its loading and just turn off automatically , i dont know why , sometimes a message appears and say i have to close some programs.

done and removed antivirus and just i have the normal programs like messanger and yahoo mail nothing more , by the way i was playing it before i install new windows and after i did i downloaded and installed but while installing i didnt install Xfire so maybe Xfire the reason or what?

i need some help with that thanks.

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