Hello all!!

I am hoping someone can help me figure this out,

I am trying to create an ISO using the new Sonic DVDit HD only I'm not trying to create a HD Dvd. I'm just creating a standard DVD. I have two video files with that were old Super 8 films with sound. It creates the menus, it transcodes both the video and audio, however when it begins the process of writing the files about halfway through I get this message:

End of File - 10003

I have no clue what this means. I've completely redone the project. I've exited the program and restarted it. I really don't know what else I could do to remedy this problem. Any suggestions? I would greatly appreciate any advice you wonderful people could offer. Hope to hear back soon! Thanks!