'Could not find MAXScript Macro Recorder' in 3dsMax2017

[Finetuned]

I've configured maxconnect in PyCharm by duplicating 3dsmaxpy.exe as python.exe.
This resolves the issue as described on the Autodesk forums

The script mostly fails to find the mini listener except when using debug:

• running from the command line fails 100% of the time.
• running run.py works around 50% of the time.
• debugging run.py works 100% of the time

  File "_ctypes/callbacks.c", line 314, in 'calling callback function'
  File "C:\Dev\bin\YCDIVFX_MaxPlus-master\packages\maxconnect\tomax.py", line 197, in _getWindows
    attachThreads(gMainWindow)
  File "C:\Dev\bin\YCDIVFX_MaxPlus-master\packages\maxconnect\tomax.py", line 176, in attachThreads
    thread = GetWindowThreadProcessId(hwnd, 0) #max thread
WindowsError: exception: access violation writing 0x00007FFF00000000
Could not find MAXScript Macro Recorder

Process finished with exit code 0

[Finetuned]

I traced the issue to attachThreads(hwnd) in packages/maxconnect/tomax.py and added:

  lpdw_process_id = ctypes.c_ulong()

then updated the second arg from 0 to:

   thread = GetWindowThreadProcessId(hwnd, ctypes.byref(lpdw_process_id)) #max thread

ref