Map View not showing on Tracking page

I have Continuous Tracking enabled and can view a complete list of co:ordinates on the GPS page, but there is no Map View on the Locate page.

There was a Map View shown yesterday with the markers in the correct position as determined by the co:ordinates, but there were red lines attached to all markers which extended off the map and down into the middle of the ocean somewhere. How can I generate the map page and how to get rid of these extended red lines?
Kabe