How to fix an invalid win32 application? BitTorrent help?

[ReaperXC]

I have a toshiba laptop and run Vista home or basic, whatever, and I have ESET smart security. I have just downloaded BitTorrent and when I try to run it this message appears:
"E:\........\BitTorrent-6.4.exe is not a valid Win32 application"

My only option is okay

 

[Sattamander]

Don't know why you bought one of the best anti virus security systems if you are not going to listen to it.

 

[delicioussoul]

I usually get that error message when trying to install an application with my firewall enabled. I would try turning off the firewall and then re-installing the application.