Image Unpack Error

I downloaded FortiClientOnlineInstaller_6.0.exe. Begin the installing. When installing reaches about 50% the proggram give an error: Ошибка распаковывания образа (Image unpack error). I have no VPN, Proxy and others clients. OS: Windows 7 x64.

I need straightfowardly 6.0 version on only Windows 7. I don't need Fortinetclient 6.4.