Permission issues can sometimes prevent Lumion from accessing hardware resources.
Right-click the Windows Start button and select Device Manager . Expand Display adapters to see your graphics card. lumion failed to create dummy d3d9
Although newer Windows versions include DirectX 11/12, Lumion needs legacy DirectX 9 files. lumion failed to create dummy d3d9
Simple but effective. Temporary glitches in graphics memory or driver state can cause this. lumion failed to create dummy d3d9
Then: