UE 4.4 Fails to generate code project files

Hello can you please help me i have the same problem, but in the logs i get the following error message! What can i do with that? Thx

What I Use:

Windows 8
Visual Studio 2013 Professional
Windows SDK 8.1
UnrealEngine 4.4

UnrealBuildTool Exception: ERROR: NOTE: Please ensure that 64bit Tools are installed with DevStudio - there is usually an option to install these during install