How I get the lightbox download working?

Q: I've purchased and downloaded this program yesterday. After installation, I would like to start the program, but nothing happened.
Can you tell me how I get the program working? PC is rebooted several times already. I have already reinstalled the program 3 times, however if it all didn't help.
You may have a solution for me and hope you could help me soon, because the program I'm going to bet on a project where I am working on. Thanks!

A: Try to do the following:

Control panel -> System -> Advanced system settings -> (Performance) Settings -> Data Execution Prevention.

Turn off DEP or add VisualLightBox in the exception list.