Google Maps GPX viewer not working inside accordion

Hi I am trying to put a load of gpx maps on my site for my cycling group using the above plugin The maps plugin works fine on the site pages as standard however when I try to embed the map in an accordion page I get the text rather than the map - as follows:: [map style="width: auto; height:400px; margin:20px 0px 20px 0px; border: 1px solid black;" maptype="ROADMAP" traffic="yes" gpx="http://kocs.co.uk/wp-content/uploads/140503 Knutsford to Teggs Nose via Prestbury.gpx"]   Can you help please