[DVD-o-matic] (no subject)

I am having trouble at creating the actual DCP after the program checked for hashes. When the program goes to the stage where it says "Make DCP for..." it loads for a bit and then it says "Error (error in writing video MFX)". I am just wondering, how I may fix this. I already tried to do it a second time but still it just said the same thing. Also, all the other stage were done normally and well.