Windows movie maker

Last year I went on a tour and took lots of pictures. I was thinking of putting them on a cd for viewing and I used Windows Movie Maker. But the heck is that I cant do this
When I click on the "Save to my computer" option, I make the file name and then set a directory to save it to C:\.
I click "Next" and then select "Best Quality for playback on my computer." It also tells me about the size it will be and how much I have on my HDD.

When I continue, it goes to the "Saving Movie" screen, and estimates the remaining time. Then it tells me: "Windows Movie Maker cannot save the movie to the specified location. Verify that the original source files used in your movie are still available, that the saving location is still available, and that there is enough free disk space available, try again."

All of the requirements are met bit yet it does not work.


Please help me!