Do you own a registered version of Bitdefender?
If so, please check if these links are blocked for you:
http://mtasa-blue.googlecode.com/
http://multitheftauto.googlecode.com/fi ... -1.3.4.exe
If any of them are blocked, please fill out this form:
http://www.bitdefender.com/support/contact-us.html
And make sure the 'Message' box contains at least this:
FALSE POSITIVE [url=http://mtasa-blue.googlecode.com/]http://mtasa-blue.googlecode.com/[/url] [url=http://multitheftauto.googlecode.com/files/mtasa]http://multitheftauto.googlecode.com/files/mtasa[/url]-1.3.4.exe
Thanks for your help!
PS Don't bother unless you have a valid Bitdefender license number - It won't work without one.