Can't run demonbuddy ver 404

I recently downloaded the demonbuddy ver404 but and run it but it stopped running with error msg :

"Demonbuddy has stopped working........
A problem caused the program to stop working correctly. Window will close the program and notify you if a solution is available."

I bought the demonbuddy and used the password as given. What is the problem and how to resolve it?

Can't run demonbuddy ver 404