Unreal Engine 4.26 Preview

I used 4.26 p5 source. When I run the GenProjFiles.bat it won’t run. “GenerateProjectFiles ERROR: It looks like you’re missing some files that are required in order to generate projects. Please check that you’ve downloaded and unpacked the engine source code, binaries, content and third-party dependencies before running this script”. Have you tried to compile 4.26 p5?