If Z is available this COULD fix all issues with this script not working for people in instances and in town. The default of Z might be 0.

Instances are not on the same Z plane as the rest of the world. I remember back in Alpha you could fall through the world at some points and end up IN an instance.

Though thinking about it... you are pinging the mini map which IS only 2D and not 3D. Would the result of the ping for Z just be zero? Would it give a Z cord at all? Would it follow the proper curve of the landscape?

I can test these things right now if someone can tell me an easy way to get the results of the ping script. I am at work but I have access to at least one account at a time.

EDIT: BTW Falkor, in your avator your dog looks wicked HIGH.