Cannot open specific tagged file in pcl-cvs

[John Smith <john.smith@pace.co.uk>]

In GNU Emacs 21.1.1 (i386-msvc-nt4.0.1381)
 of 2001-10-22 on buffy
configured using `configure --with-msvc (12.00)'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ENG
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t


I open a CVS window with

  M-x cvs-quickdir RET RET

I choose a file, and generate a *cvs-info* window by typing "+"

I move the cursor to one of the tags in the *cvs-info* window, and attempt
to open that file with "o"

I get an error message:

cvs-check-fileinfo: Invalid :dir in cvs-fileinfo [cl-struct-cvs-fileinfo nil
UNKNOWN nil c:/emacs-21.1/bin/ ldrindex.c nil nil nil ]


The CVS repository is a remote one.
The same key sequence works for on another machine with Linux.

John Smith