Exactly
These are two completely separate applications.
vBulletin code concerns
vb so its going to show locations it codes for its own script.
Our application which integrates with 20 different forums and is as a full featured application like any other has its own who's online and knows its locations.
Your
vb is picking up locations it does not know about thats why its unknown location.
Using a
vb mod like the one I posted there should help