Been having some problems with XDK build in another thread and was reading the Intel XDK forum and came across this:
https://software.intel.com/en-us/forums/intel-xdk/topic/607195
Basically, mentions creating a www directory and moving files around after export from Construct.
It didn't solve my problem. However was wondering if this is required?
Develop games in your browser. Powerful, performant & highly capable.
If Intel says that should be true. I have never done it.
As I always do it, I leave empty the "Source directory" and it works ok.