Hi there, I am attempting to build  4.2 branch under OSX, however  file fbxsdk.h file cannot be found.
I have downloaded  3 dependency files (Required_1of2., Required_2of2. and Optional. despite not needing it by  look of things) and  header is in  source tree:
$ find . -name fbxsdk.h
./Engine/Source/ThirdParty/FBX/2013.3/include/fbxsdk.h
Messages from Xcode (5.1.1) log pane:
[2/548] Compile Module.UnrealEd.11_of_21.cpp
In file included from /Volumes/Data/Source/3rdParty/UnrealEngine/Engine/Intermediate/Build/Mac/UE4Editor/Development/UnrealEd/Module.UnrealEd.15_of_21.cpp:7:
In file included from /Volumes/Data/Source/3rdParty/UnrealEngine/Engine/Source/Editor/UnrealEd/Private/Factories/AnimBlueprintFactory.cpp:20:
/Volumes/Data/Source/3rdParty/UnrealEngine/Engine/Source/Editor/UnrealEd/Private/FbxImporter.h:70:10: fatal error: 'fbxsdk.h' file not found
#include <fbxsdk.h>
         ^
Can anyone provide any help please?