Autocad Fatal Error Unhandled Access Violation Reading 0x0008 Exception __top__ -

If you are using AutoCAD Vertical products (Civil 3D, Electrical, Map 3D), this error often appears when switching between the "Drafting & Annotation" workspace and a specialized workspace. Always run the "Reset" function specific to your vertical product first.

Third-party add-ons (like CADWorx, ProSteel, or custom LISP routines) often cause access violations. If you are using AutoCAD Vertical products (Civil

In many cases, this error is triggered by a corrupted .cuix (Custom User Interface) file or a saved workspace. If you are using AutoCAD Vertical products (Civil