Version 4.20.0 through 4.20.2 does not include the directories for *.generated.h
files, and you must include them manually.
To do so, follow these steps.
- Create an environment variable called
UNREAL_ENGINE
containing the path to the root directory of Unreal Engine's files, without a trailing backslash, for exampleC:\Program Files\Epic Games\Unreal Engine\UE_4.20
.