gps 1.7.1 -> backend admin -> error on edit track

in joomla backend admin when i click on a track too edit it, it get this error:
Fatal error: Call to undefined method GpsToolsModelCategories::get_track_details() in /home/carpoolb/domains/carpool5bar1.com/public_html/administrator/components/com_gpstools/views/tracks/view.html.php on line 35