's answer did not work in my case.
But the following does:
In LandscapeProxy.h add LANDSCAPE_API
in front of the declaration of EditorApplySpline and include the Landscape Module in your Build.cs.
's answer did not work in my case.
But the following does:
In LandscapeProxy.h add LANDSCAPE_API
in front of the declaration of EditorApplySpline and include the Landscape Module in your Build.cs.