Hi, with the release of Prepar3Dv4 a lot changed regarding the activation of SODE inside Prepar3D v3 and v4, because SODE 1.5.x now works different.For FSX and P3Dv2 it is still the old technique! If you run Prepar3D v2, you can find the old guide here: If you are running FSX or FSX-SE, you will find the guide here:   Make sure you have the newest scenery installers, that support SODE 1.3 and newer. With the switch from 1.2 to 1.3 the SODE structure was changed, and so