AVA Missing file help

I have Spyware Doctor installed, and everytime i play ava, theres 2 boxes that pop up, something about " Hidden process ava.exe, would you like Spyware Doctor to delete it next time you run it?".
And then i accidentally pressed YES, and now when i try to start my game from REACTOR, it goes "DOWNLOAD" instead of "GAME START"

Could someone tell me whats missing?
In my ava folder, it says that AVA/Binaries/GameGuard folder was modified today

go get a better av and go redownload ava...have fun

Actually, i found outt hat it was AVA.EXE missing.
I got it from my friend, put it in my folder, unblocked it, and it STILL doesnt work >_>

And for tosh, that was a totally useless post. You think i wouldn't have known that my other option was to redownload/reinstall? And i'm not changing my AV.

Hell, why would i take advice from someone that can't even spell "Respect"?