Your graphics card drivers are outdated, corrupted, or missing. Integrated Graphics Interference:

stands for Direct3D 9 , an aging but still relevant API (Application Programming Interface) developed by Microsoft for rendering graphics. Even though modern Lumion versions rely heavily on DirectX 11 or 12 for high-end rendering, they often use legacy checks to probe your system capabilities upon startup.

Error starting Lum2024 - "failed to create dummy d3d9"

Progress was slow. He checked the "Graphics Settings" in Windows.