What late reply? I hope you're allowed a weekend!
It's quite possible I didn't set the system paths for Maya - tell the truth, I don't know how to do that. I thought Windows did it automatically when Maya was installed. There was an option to check in the installer, and I checked it, so that should have done it, shouldn't it? Sorry, born-and-bred Mac man here!
I don't get any error messages, just printing (to screen, of course) the file location followed by the text of the .bat file. I've attached an image of the Cmd window, in case that helps.
Thank you again for taking the time with this.