The DLL might be choking on a corrupted object in the drawing.
Getting hit with a "Fatal Error" right when you're in the zone is frustrating, especially when it involves a cryptic file like Autocad Fatal Error Unhandled Delayload Pm16.dll
Browse and add the file (typically in C:\Program Files\Autodesk\AutoCAD 20xx\ ). The DLL might be choking on a corrupted