[JJR512]

I know what the problem was.

When I originally loaded VBGooglemap.php (both at work and at home), and got the full-width map, I started playing around with the map, scrolling around and zooming in. Then I clicked the Your Entry button and started getting that error message. I checked the googlemap table in the database just now, and saw that there was an entry for me, with all data except latitude and longitude. I deleted my record and reloaded the page and clicked Your Entry, and now the page appears to work just fine.

So the problem is that if somebody starts playing with the map before clicking that button, apparently a partial record is created in the database. But then when the script loads that partial record, it's choking on not finding the data it's expecting to find.

The best fix I can think of is to not make a record in the database if all the data isn't there.