Yes, it was a simple case of changing to forward slashes in my init.html file - <input type="hidden" name="map_web_imagepath" value="C:/Inetpub/wwwroot/tmp/"> Thanks for the suggestions, Steve _______________________________________________ Mapserver-users mailing list Mapserver-users@lists.gis.umn.edu http://lists.gis.umn.edu/mailman/listinfo/mapserver-users