In the AutoCAD file format several standard object/element definitions are available, such as lines, texts, etc. Autodesk allows application developers to create additional object definitions to better suit their application (you may think of them as "smart objects"). Such additional objects are called Custom Objects, when their object enablers are present and Proxy Objects when their object enablers are missing. In order to display custom objects the related application Object Enabler needs to have been installed on a RealDWG host program such as AutoCAD or MicroStation. Note that an enabler is not required to open a DWG file. When an enabler is missing, the file still opens, and its custom objects become proxy objects and the graphics are not as desired. For example:
Object enablers require an equivalent 32bit or 64bit CAD application OpenPlant CONNECT Edition is a 64bit application. You need to install the appropriate object enabler based on the corresponding version of power platform i.e MicroStation being used.
Object enablers are also AutoCAD version/year specific. For example: if you are running AutoCAD 2019 or MicroStation with 2019 RealDWG you need to install the 2019 Object Enablers. Installing a different version/year object enabler will not work.
MicroStation and AutoCAD Object Enablers - OEs
V8i, CONNECT, 2023
When opening a DWG file in MicroStation…
Last edited 25 days ago in MicroStation > MicroStation Wiki
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