Problem with idvd encoding Fotomagico slideshow

I have been using Fotomagico to create slideshows and then export them to idvd for burning to a dvd. This work well until today. For some reason idvd will no longer encode the slideshows. It begins the process but then stops and gives me a failure window that informs me that the file does not exist. Yet I can open the file in Fotomagico and play it. What can I do to rectify this problem.