Enchanced Client.
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To get it working with the new client you need to copy the MapWindow.lua file into the skin source directory.
The directory will be like this:
<path to EC>\User Interface\<skinname>\Source\
Where <skinname> is whichever skin you use or "Default" (without quotes) if you use the default one (you may need to create the directories in that case).
Copy the MapWindow.lua file there and restart the enhanced client.
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Thats what the readme says
1) go to cartographer map
2) select MapWindow.lua
3) copy MapWindow.lua
4) go to uo enhanced installation map
5) Go to Your User interface map
6) select skinname ( example Pinco)
7) Go to source
8) right mouse click and press paste
Test if it doesnt work yet
9) go to cartographer map
10) start cartographer
11) right mouse click options
12) select where you installation paths of your client(s) are
If you did all this it should work

I recently did this ( since when where readme files usefull :S )
And it works i can now track myself! ( not that i use it... i use the default map of the ec client

)
Good luck with it

hope it helps