If there are 3 Feral-Hearts on your fire wall and It says FeralHeart.exe, FeralHeart.exe(2), FeralHeart.exe(3) delete (2) and (3) then try restarting your Pc. If that does not wrok, uninstall FH and try turning off your fire wall whilst downloading it again (Make sure you turn Fire wall back on after you've checked it works.)
Only pay attention to this if you are using Norton: Go onto the Norton fire wall and turn it off whilst you are downloading FH but if it works let the fire wall turn back on automaticlay by it's self.
If any of these don't help you please reply and I will find a way.
I hope this does work lovey. :3