I am getting the error that
"Some elements were lost during import. ActiveX an some proprietary components cannot be imported. Try exploding the file in Autocad or setting the PROXYGRAPHICS to 1."
Please help in this matter.
You have imported an autocad drawing into your revit project. In autocad either explode the autocad drawing with the explode tool or also in autocad type in PROXYGRAPHICS at the command line hit enter and change the setting from 0 TO 1. If you don't have autocad ask the sender of the file to do it and resend.