During setup of current develop branch, I get this error message:

Traceback (most recent call last):
File "", line 1, in
File "C:\Users\z001edxb\AppData\Local\Temp\pip-clrr6blj-build\setup.py", line 99, in
_xbuild = ""%s"" % _find_msbuild_tool("msbuild.exe")
File "C:\Users\z001edxb\AppData\Local\Temp\pip-clrr6blj-build\setup.py", line 77, in _find_msbuild_tool
hkey.Close()
AttributeError: 'NoneType' object has no attribute 'Close'

I have a WDK installed, not all of those mentioned in setup.py/_find_msbuild_tool()
using WinPython 32bit-3.5.1.2 on Win7
pull request #192