By James Phillip
When using the Cobie extension add in for Revit the Setup and Modify parts of the process work well, however the last part of the process,
Export to Excel always returns the following error message:-
Failed to export:
System.NullReferenceException: Object reference not set to an instance of an object.
at RDES.Revit.COBie.COBieExtension.DomainExporter.Execute(ExternalCommandData commandData, String& message, ElementSet elements)
This error is now fixed in the latest version of the Cobie Extension add in. You get this update using the link below