Hi guys,

I did this mod this weekend. You just need
the correctly named .tga graphics files in the
right place. Go look at your unpacked files
and find a path that looks like ...\buildings\#northern_european\...
or better yet just search for paved_roads (for cities)
and c_paved_roads (for castles).

If you added in a third upgrade like highway_roads
in your EDB file then you need a .tga file with this
name. Actually you need three: you need a
highway_roads.tga and a highway_roads_constructed.tga
under buildings\#northern_european\... and there
is also a subdirectory called \construction underneath this
that also needs a highway_roads.tga file. Sorry I'm at
work so I don't have the exact path names for you but I
know I got it to work.

Best of luck