Autocad Exception In Vl.crx Arx Command

Follow these steps in order. Start with the simplest (no-risk) solutions before moving to more invasive fixes.

If specific configuration files (like acad.lsp in the program folder) are corrupted: autocad exception in vl.crx arx command

AutoCAD automatically loads specific LISP files upon startup (e.g., acad.lsp, acaddoc.lsp). Follow these steps in order

In some cases, the error appears when AutoCAD tries to generate a font preview or substitute a missing SHX font. Because font handling in AutoCAD involves LISP callbacks, a corrupt font file can cascade into an exception in vl.crx. (vl-load-com) (vl-string-search "a" "abc")

C:\Program Files\Autodesk\AutoCAD 20XX\acad.exe" /safemode

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

If this crashes, the issue is with vl.crx itself, not your code.

(if (not (member "vl.crx" (arx)))
  (if (not (arxload "vl.crx" nil))
    (alert "vl.crx failed to load")
  )
)