Hello All,
I just upgraded my sim to P3D v4.5 and after installing Mega Airport Zurich V2.0, I'm facing the same issue: no taxiways and runway markings.
I tested on 2 different computers and same problem...
My P3D is installed in the default directory: C:\Program Files\Lockheed Martin\Prepar3D v4 and the Zurich add-on is in the following directory: C:\Program Files\Lockheed Martin\Prepar3D v4\Aerosoft\Mega Airport Zurich V2.0
My exe.xml had no reference to APController.exe, so I assumed this would be the problem, I added the <launch.addon> lines as suggested above int this post (see lines in bold) but it didn't solve the problem, I'm no expert in computer stuff, so I'm not sure if I inserted those lines at the right place but I doubled checked the path and it's correct, any help would be appreciated:
<?xml version="1.0" encoding="UTF-8"?>
<SimBase.Document Type="AceXML" version="3,0" id="exe">
<Descr>AceXML Document</Descr>
<Filename>exe.xml</Filename>
<Launch.Addon>
<Name>XHT.APController</Name>
<Path>C:\Program Files\Lockheed Martin\Prepar3D v4\aerosoft\AirportController\APController.exe</Path>
</Launch.Addon>
</SimBase.Document>