: A corrupted user profile can prevent vl.crx from loading properly. You can use the Reset Settings to Default tool found in the AutoCAD folder in your Windows Start menu.
The "Exception in vl.crx ARX command" is a classic AutoCAD stability issue that strikes at the heart of the Visual LISP engine. While intimidating, the error is almost always resolvable by methodically isolating the trigger—whether it's a corrupted drawing, a broken LISP routine, a conflicting third-party ARX, or a damaged vl.crx file itself.
Blocked Drains Twickenham