I have an iMac computer and when I generate a trail, you send me a link to a 3D view. This works very well, and what's more it works when I email this link to friends. But when I try this link on my own Mac laptop, running Mavericks 10.9.4, Google Earth opens with this message:
"The Google Maps API key used on this website was registered for a different website. The developer of this website can generate a new key here."
The word 'here' is a link to a non-existent page.
What's the problem and how can I fix it?