Precompiled headers with DLL solutions. Cannot open precompiled header file

Question

This worked without error when this solution worked off of .lib files instead of .dll files.

I have all of my projects except one currently using a precompiled header,

Answer 1

I had this issue after I deleted and re-added stdafx.cpp from & to my project. Solution:

• stdafx.cpp needs to have the property Create PrecompiledHeader (/Yc), this sets stdafx.cpp as the one that is responsible for creating the .pch from stdafx.h
• the project (and with that all the files in it) can have the property Use PrecompiledHeader (/Yu), they can use .pch created by the compilation of stdafx.cpp