autorun.hta is not a valid win32 application

I´m receiving this error in Windows 7 64 Bit system when installing Ax 2012 from local drive:

"Autorun.hta is not a valid Win32 application."

I´ve tried this with no luck:

https://community.dynamics.com/ax/b/klaasdeforche/archive/2014/01/31/ax-setup-autorun-hta-is-not-a-valid-win32-application.aspx

¿Any ideas?

Thanks