Not familiar with that particular program but these schedulers usually rely on Windows Scheduler to function through their own GUI. If Windows Scheduler is not working properly then that will most likely be the reason for the failure you are seeing.
I had a similar problem with a Hauppauge unit. I never sorted it out though as I have more than one computer and I just changed to another machine - on which it worked successfully.
Not a lot of practical help but it may point you in the right direction.