Autocad Exception In Vl.crx Arx Command May 2026

The exception is rarely caused by a bug in vl.crx itself (as it is a stable, core Autodesk module). Instead, it is usually the "victim" of external interference. The primary causes are:

The "Exception in vl.crx" error is a memory handling failure in the Visual LISP engine. autocad exception in vl.crx arx command

While less direct, driver issues can cause memory corruption in the drawing viewport. The exception is rarely caused by a bug in vl

(vl-unload-vlx)
(vl-load-com)

Seek official support if:

(vl-load-com)
(vl-string-search "a" "abc")

If this crashes, the issue is with vl.crx itself, not your code. Seek official support if: