Model Builder Community

I purchased the Model Builder program and I can't get it to work. I have installed it in a computer that has Windows Vita 64 bit operating system. When I open the program it freezes the computer. Any suggestions? Thanks in advance.

When encountering an error like you described,
try opening the program as Administrator.
To do this, use your right mouse button on Model Builder's desktop Icon, then you will see a pop-up menu.
Choose "Run As Administrator" from the menu by clicking with your left mouse button.
Accept any pop-up questions.