>>>>> "Malcolm" == Malcolm Box <malcolm(a)brownale.demon.co.uk&gt; writes: Malcolm> Malcolm> I agree that it is an invocation problem. However, it doesn't work with Malcolm> cmd or bash, which are the only shells I have available (and one more Malcolm> than most NT users will have!) It appears that the necessity for Malcolm> redirection and quoting issues are mucking things up. Can you try changing the following line in cvs-run-process: (start-process "cvs" cvs-stderr-buffer cvs-shell "-c" to (start-process "cvs" cvs-stderr-buffer cvs-shell "/c"