
I'm trying to turn render this design in 3D, so when I try to use the Extrude tool it seems I'm unable to select any objects from the design. There are more missing applications listed, all which reference AutoCAD Civil 3D. WEB Address: Total number of proxies: 1290 Note: If your computer has internet access verify that Check Web for Live Enablers is selected in the Options dialog box on the System tab to have AutoCAD LT automatically search the Live Enabler website for the appropriate object enabler. Visit the AutoCAD LTObject Enabler Assistant web page to locate Autodesk object enablers or contact the software publisher about object enablers for other applications. However many manufacturers, including Autodesk provide object enablers that alsoallow you to edit these custom objects. You do not need the original application to display proxy representations of objects that were saved in the drawing. The drawing you have opened or referenced contains custom objects created by an unavailable ObjectARX application. When I open the file I am greeted with the prompt

dwg file from elsewhere and was asked to render it in 3D, it's a 2D design of some pipes in a house.
