VS error PRJ0050 and RegSetKeyValue

I met the visual studio error :prj0050 suddenly.  ( regist DLL error )
I didn't change any compile option or link.
I checked source codes.  I found  the reason.     I used the function  'RegSetKeyValue'.


Read MSDN-explains  more detail.(attention to remark section)
  http://msdn.microsoft.com/en-us/library/windows/desktop/ms724921(v=vs.85).aspx