The following appears when trying to generate a 3D AutoCAD drawing using AutoPIPE Vessel, why? user tries to generate the drawing (Execute Drawing Generation option) which ends with error:
Null IDispatch passed to AutoWrap
AutoCAD 2021 not registered properly
In this case, the problem is the administrative restrictions on the computer given by the IT department. The export of the model to Autocad 3D dwg works with full authorization.
Warning Messages, Unregistered Messages, Error Messages, or Application Crash issues
AutoPIPE Vessel