windows sdk configure [closed]

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I am following instructions on how to build ros windows sdk from sources (given here). I am getting the following error when I try to winros sdk configure

Traceback (most recent call last):                                              

      File "c:/work/sdk/catkin/cmake/stack_get.py", line 4, in <module>             
        import rospkg.stack                                                         
    ImportError: No module named stack                                              
    CMake Error at catkin/cmake/safe_execute_process.cmake:13 (message):            
      Error executing process with arguments COMMAND C:/Python27/python.exe         
      c:/work/sdk/catkin/cmake/stack_get.py c:/work/sdk/catkin/stack.xml            
      C:/work/build_sdk/catkin/CMakeFiles/stack.cmake                               
    Call Stack (most recent call first):                                            
      catkin/cmake/catkin_stack.cmake:12 (safe_execute_process)                     
      catkin/CMakeLists.txt:23 (catkin_stack)

Any suggestions on how to fix it?