How come PowerDVD 12 quits after opening in Windows Vista

I encountered this problem today, when I tried to launch PowerDVD 12 on my PC.
It just crashes when I open it saying that PowerDVD has encountered a problem and needs to close.
It was working fine, and now this error shows up.
Tried to find a solution online but none was found.
So can you please tell me why PowerDVD 12 quits after opening because I have no idea how to fix this.
Thank you for all your help.
