Did you end up finding a fix for this issue? I am assuming the compile to engine/dx patch worked. I am just trying to avoid installing the Wwise plugin to the engine so I don’t have to worry about distribution to my team.
For anyone else who comes across this… It seems as if the error was caused by the Wwise 2018.1.0.6714 Unreal Project Integration. Adding xlar8or’s fix ended up revealing a mess of missing files. If you aren’t wanting to install Wwise as an engine plugin, an upgrade to 2018.1.1.6727 AND the “string DXSDK_DIR” patch should do the trick.
Did you end up solving this issue?
I have the same problem as Alumine, no Intermediate folder and same error in UE 
Can someone help us for this problem please ?
BASH- What version of Wwise did you integrate into your project?
“Version” : 201811189,
“VersionName” : “2018.1.4.6807.1189”,