Code for Map Marker is broken...

Map marker is showing broken image (and not displaying marker on map). When I view the code it shows an incorrect path: http://www.deacongiles.com.php53-13.dfw1-1.websitetestlink.com/wp-content/plugins/wpmu_dev_maps_plugin/img/wp-content/plugins/wpmu_dev_maps_plugin/img/wp-content/plugins/wpmu_dev_maps_plugin/img/system/marker.png

I have also given it a custom marker at: http://www.deacongiles.com.php53-13.dfw1-1.websitetestlink.com/wp-content/plugins/wpmu_dev_maps_plugin/img/system/DGmarker.png

but I can't get that to show either...

Map is located on: http://www.deacongiles.com.php53-13.dfw1-1.websitetestlink.com/find-us/

Please help.

Thanks,
Linda