Deleted .dvd file, and "Could not open file for writing." I just completed my first Blender job. Without thinking, I deleted what I thought was a superfluous .dvd file. 

After realizing I rendered my file in black and white instead of RBG, I tried to render my job again but I just get a the warning, "Could not open file for writing." I do have a saved, .blend file. Is it possible to generate another mpeg file from this?
It could also be a permission problem and maybe the .dvd file has nothing to do with it... double check if blender can write to the output path set for your work (still or movie) in rendering settings...