Sage Act Pro Windows 7 installation error

Hi,
I am using Windows 7 OS and having serious issues during the installing Sage Act Pro 2012. I had Sage Act Pro 2009 and it was working perfectly but why this is playing with me. I really need your help to resolve the following errors.
Thanks.

Sage ACT!
Unable to retrieve schema metadata
Hata
Object reference not set to an instance of an object.
