Exception : GoodsReceipt

Dear Sir,

I use .net connector 2.0 with VB.

I got an error message when drag GoodsReceipt into Proxy,

the message is :-

An exception occurred while trying to create an instance of myProg.GoodsReceipt. The exception was "Method GoodsReceipt.CreateFromData can not be reflected".

Could you please help me to fix this error?

Thank you in advance for your help.

Teerakorn.