Dxfdwg.aip

Because CAD files (DWG/DXF) are structurally very different from Illustrator files (AI), this plug-in is often the source of error messages or crashes.

: /Applications/Adobe Illustrator [Version]/Plug-ins/Illustrator Formats . dxfdwg.aip

So what is dxfdwg.aip ?

: A standard uninstall often leaves behind bad registry entries. Use the Creative Cloud Cleaner Tool to perform a "clean" removal before reinstalling the latest version. Because CAD files (DWG/DXF) are structurally very different

Software conflicts often occur when your OS and Illustrator versions are out of sync: who can inspect

The design choices behind a format determine who gets to build, who can inspect, and who can repair.