Main Address shows as undefined on the map Info Window

Thank you for this absolutely fantastic extension!

I bought it just this morning and got it up and running within a few minutes, but I have a small problem.

The map points are retrieved from a MySQL table (a list of club members) which contains full name, address, phone number, latitude, longitude

Everything works ok except when I click on a map point, it shows undefined where the address should show, but it does show the name and the phone number (phone is set as the "message" field).

Have I done something wrong?

The address field is created from a view which is a concat of 3 address lines, postcode and country (with spaces between the fields)

Thanks

Brian