Scubadoo:
Thank you for your response. It got me thinking about the mapset that might have been installed when the problem started and those that have not changed since then. I uninstalled MetroGuide Canada v5 on my laptop and netbook and the problem disappeared I re-installed it and the problem re-appeared? I wonder what is diffrent about the Metroguide map thatmight make this occur. I am alsonot sure why it does not happen on my desktop. I don't know if it is related but when the error occurs there are two instances of nRoute in the Task Manage.
Thanks again. 39 mapsets all working innRoute that's pretty impressive.