AutoCAD Knowledge Base article TS1056027
Note: AutoCAD 2007 has the current Architectural Desktop 2007 object enablers built into the product. By opening a file in the 2007 product the objects are upgraded to the latest version of AEC objects and your older version products Will need the new enablers. For example you are using AutoCAD 2006 which has the ADT 2006 enablers and you send your drawing to Joe which is using a 2007 product and saves the file back 2004 DWG for you. You will need the updated enablers to read this files AEC objects.
ARX_ERROR when opening a drawing in AutoCAD®
Published date: 2006-03-22
When you opened a drawing in AutoCAD®, you received one of the following error messages:
- ARX_ERROR: eNotThatKindOfClass
- ARX ERROR: eDuplicateKey
The error occurs because the drawings contain objects from the latest version of Architectural Desktop that could not be interpreted with the previous version of the Object Enabler.
Three Object Enabler Hotfixes have been released to prevent these errors.
For AutoCAD® 2004 or 2004 based products:
For AutoCAD® 2005 or 2005 based products:
For AutoCAD® 2006 or 2006 based products: