Hi David,
I apologize for any inconvenience.
If you open up Ruby Console (SketchUp menu Window > Ruby console) do
you see some errors wher you try to export urban control values?
If you can send me your .skp file to our support email, I'll export urban control values to .csv file and send it back to you.
If the buidlings don't show values on screen, they are probably not Modelur buildings.
Best,
Jernej