XToolkitCommError problem on ICpfcAsyncConnection.Connect

Hello eveyone,

My English not good. But I have a trouble problem.

I have C++ program create menu,and some button can call vb.net COM object.

I create a  form to test creo connect.

I tried connect(Nothing,Nothing,Nothing,Nothing)

Then Creo show error XToolkitCommError

please help...thank.

enviroment variable:

PRO_COMM_MSG_EXE = C:\Program Files\PTC\Creo 3.0\F000\Common Files\x86e_win64\obj\pro_comm_msg.exe

PRO_DIRECTORY=C:\Program Files\PTC\Creo 3.0

double click => vb_api_register.bat

CreoTest.vb