Error: vlax-ldata-get – No Function Definition

Error: vlax-ldata-get – No Function Definition

Symptoms

You may receive an AutoCAD error similar to:

; error: no function definition: VLAX-LDATA-GET

Cause

This is an AutoCAD error, not a SteelPLUS software error.

The message indicates that AutoCAD did not properly load its ActiveX/COM support modules, which are required by AutoLISP applications that use Visual LISP functions.

In most cases, the problem is caused by an AutoCAD installation or configuration issue rather than the drawing or the SteelPLUS Bundle.

Recommended Solutions

Try the following solutions in order. After completing each step, restart AutoCAD and test the SteelPLUS application before moving to the next step.

1. Reset AutoCAD Settings

Resetting AutoCAD restores the default program settings and often resolves startup or configuration problems.

  1. Open the Windows Start menu.
  2. Locate your AutoCAD version.
  3. Select Reset Settings to Default.
  4. Restart AutoCAD and test the application.

2. Repair the AutoCAD Installation

If resetting the settings does not resolve the problem, run the AutoCAD Repair option from Windows.

After the repair is complete, restart your computer and test the application again.

3. Install the Latest AutoCAD Updates

Verify that the latest updates or service packs have been installed for your version of AutoCAD.

Keeping AutoCAD up to date can resolve known issues related to Visual LISP and ActiveX functionality.

4. Restart Your Computer

A complete system restart may resolve problems caused by Windows components that did not initialize correctly.

5. Reinstall AutoCAD

If none of the previous solutions resolve the problem, perform a clean uninstall and reinstall of AutoCAD.

This should only be considered after all other troubleshooting steps have been attempted.

Why This Happens

The VLAX-LDATA-GET function is part of AutoCAD’s Visual LISP ActiveX (COM) environment. If these modules fail to load during startup, AutoCAD cannot recognize Visual LISP functions and reports “No function definition” errors.

Since these functions are built into AutoCAD, this problem is typically resolved by repairing or restoring the AutoCAD installation rather than reinstalling the SteelPLUS Bundle.

Important: Reinstalling the SteelPLUS Bundle will not normally resolve this error because the missing function belongs to AutoCAD, not the SteelPLUS software.

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