I just installed WMV 12 and worked on my first project.  When I try to save it to a different drive, I get the following message: "Movie.wimp  File not found. Check the file name and try again."  I can save it as an mp4, but then I won't be able to edit it, or I can save it to my C drive (which I don't want to do). It appears to me that the program is doing a search for the movie I'm trying to save, but it can't find it because I can't save it to that location.