Most likely it's that gVim isn't "seeing" the file. Try the [Tab} trick of completing the filename that I mentioned. if even that doesn't work, then I'd suggest that the file isn't in one of teh 2 locations that gVim will search by default (as mentioned). ALternatively, enter the commands by hand. This is clearly going to be onerous for 400+ times, but at least if you try it on one, you can probably tell whether it's the actual editing that gVim is having trouble with, or the command file.