I hear what you are saying...
I've been creating dreams this way for the last 5 years or more... These are not the files that are causing the problem.
The files I create are from single frame images created in a Fractal program, I take the individual files into Video Wave, make each frame .33 seconds long and a fast fade between the frames. The Dream https://www.wincustomize.com/explore/dream/3982/ (Gold Star Fractal) was created this way... it works, it is located on the Wincustomize site. I do not believe I am doing anything different that I did when I created this dream (Gold Star Fractal).
The dreams I've been trying to create since are not working.
I can take a video and cut it up and make a dream out of it, I've also made many dreams out of one image to many images. It's been since the weekend that DreamMaker Tool creates a Dud when I run the program to create the Dream. The original video file (a mpeg or a wmv) works fine when using Deskscapes to apply the video as a Dream, it's only after I run the DreamMaker tool to convert the video to the .dream format that it does not work in Deskscapes.
Deskscapes works fine, Dream files work just fine, but any new dreams I create with the dreammakeing tool do not work even though they work just fine in the original format as a deskscape.
I re-installed deskscapes and it did not make any difference... oh and I rebooted since.