If you happen to experience this crash on startup:

FATAL ERROR in Vertex Shader compilation

ShaderName: sh_CRT_Windows

D3DXCompile failed - result

at gml_Object_obj_CRT_Windows_Draw_64

stack frame is

gml_Object_obj_CRT_Windows_Draw_64 (line - 1)

You can fix this by using this link and downloading the DirectX End-User Runtime:

https://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=35

Thank you and Happy Halloween!