Steve's DX10 Scenery Fixer for FSX is a legacy commercial utility, with older versions like v1.4 often found on unauthorized sites, while official sales have ceased. The software, which addresses DirectX 10 bugs, had later iterations reaching v5.4, with technical support and documentation available through community forums. For legitimate information and guides, visit Steve's FSX Analysis . A technical view - Steve's FSX Analysis
If you are looking for free ways to improve the FSX DX10 Preview mode without the paid fixer: Shader Release v3.2.3: Steve's DX10 Scenery Fixer for FSX is a
Click "Apply & Recompile Shaders." This takes about 60 seconds. Do not interrupt it. Runway and taxiway lights appearing as black squares