If disabling UTF-8 doesn't work, the next step is to repair the software itself.
del /q %temp%\*.vlx del /q %temp%\*.fas
Navigate to the AutoCAD folder (e.g., AutoCAD 2024 - English ). Select .
This specific file is a core component of Autodesk's Visual LISP (VL) extension engine. It handles AutoLISP routines, visual functions, and custom commands. autocad exception in vl.crx arx command
: If a custom application or script is trying to execute a command through the VL.CRX interface, errors within the application or script can cause this exception. This could be due to bugs in the code, incorrect usage of AutoCAD's API, or incompatibility with the version of AutoCAD being used.
(defun c:MyCommand (/ *error*) (defun *error* (msg) (if (not (wcmatch (strcase msg) "*BREAK*,*CANCEL*,*EXIT*")) (princ (strcat "\nError: " msg)) ) (vla-endundomark (vla-get-activedocument (vlax-get-acad-object))) ) (vl-load-com) (vla-startundomark (vla-get-activedocument (vlax-get-acad-object))) ;; Your code here... (vla-endundomark (vla-get-activedocument (vlax-get-acad-object))) (princ) )
If this crashes, the issue is with vl.crx itself, not your code. If disabling UTF-8 doesn't work, the next step
A damaged user profile can cause loading errors for ARX plugins. Step-by-Step Solutions to Fix the Error Follow these troubleshooting steps in order. Solution 1: Disable UTF-8 Unicode Support (Most Common Fix)
A corrupted vl.crx file itself may require a "Repair" via the Control Panel.
This comprehensive troubleshooting guide breaks down why this error happens and provides actionable, step-by-step methods to permanently resolve it. What Causes the "vl.crx ARX Command" Exception? This specific file is a core component of
Check for available updates for your specific version of AutoCAD. Install all pending . Restart your workstation. 3. Clear the LISP and ARX Startup Suite
This fixes the vast majority of vl.crx errors caused by registry corruption.