

To solve this, delete the NWC file for the external reference, load Navisworks, and open the external reference DWG before opening up the master drawing. Navisworks: If you open a drawing that contains external references, properties for AutoCAD Plant 3D objects in external reference drawings may not display. In particular, the AutoCAD Plant 3D object enabler allows Navisworks users to directly retrieve property data while reviewing AutoCAD Plant 3D models.

To download the appropriate object enabler: Navigate to Autodesk Knowledge Network. For non-Autodesk object enablers, the Proxy Information window that appears in AutoCAD when opening a drawing should show the company and its web address to acquire the object enabler. This provides essential data accessibility for design teams who create or receive files using Autodesk software. Object enablers installed for AutoCAD will apply to all AutoCAD-based software. Autodesk offers free downloadable enablers that you can use to access, display, and manipulate object data in applications different from their native environment.
