@ Rob
re: As per your explanation the listings with addresses would default to geo-lookup regardless of 000.000 -000.0000… and therefore display a map, but that actually makes the blank maps scenario more strange.
The blanks maps you are seeing have nothing to do with the lat/lng values. Open the page in Chrome, hit the F12 key and click the Console tab. You see several errors related to the maps. The most important is:
Google Maps API warning: NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys
This error basically means the Google Maps API key have not been setup correctly. I know you said you’ve “entered a Google geolocation API key“, but it seems Google does not think so so it is preventing the Maps from working on your site.
You need to follow this tutorial on how to get your Google Maps API keys. After you do, look at the error messages. Google will tell you the errors and provide a link to their documentation on what the error means.
Apologies for the maps difficulties but unfortunately there is nothing I can do about that since Google has changed their policies on their API usage … basically they’re looking to more fully monetize their services.
Hope that helps, let me know.
