Hi Phil,
the paths to the OpenStreetMap.js script in your plugin settings seem to be wrong.
Go to the Plugin options, Advanced settings and check:
The first one (OpenLayers script source) should be:
/plugins/content/gpxtrackmap/OpenLayers.2.13.2.full.js
The second one (OpenStreetMap script source) should be:
/plugins/content/gpxtrackmap/OpenStreetMap.js
That's why the map display doesn't work, it needs the OpenLayers scripts.
The elevation diagram is calculated by the plugin itself, so this still works.
Btw. is that track Ait Mansour near Tafraoute in Morocco?
Beautiful area, i've been there many times before!
cheers, Frank