May I ask if you are using NA? Because you might've needed a crossfire.exe from someone in your area D; .. Try to run as administrator if you can.
Run g4/patcher... and HGW is acting up lately I think everyone is having problems o.o
EDIT:Hero the website's attachments said my file was invalid... I still supported a virus scan O.o..... I didn't know what to do since crossfire.exe was invalid so I went to cheap ways :P