Windows Movie Maker Unspecified error

Hello there Guys,
Guess this should be an easy question for you experts, but since I am new to this kind of error I was not able to figure it out.
I have been using Windows Movie Maker from past few months. Later I stopped using it for some reason and now when I try to play, it tries to open the window for some time and then later comes up error message.
Attached the screen shot for your reference
Windows Movie Maker
Unspecified error
