How Do I Remove a Lisp in AutoCAD?

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Are you struggling with a lisp in AutoCAD? Don’t worry, we’ve got you covered!

In this tutorial, we will walk you through the step-by-step process of removing a lisp in AutoCAD. Let’s get started.

What is a Lisp in AutoCAD?

A lisp, also known as an AutoLISP program, is a series of commands and functions written in the LISP programming language. These programs can extend the functionality of AutoCAD by automating repetitive tasks or adding new features.

Identifying the Lisp

The first step in removing a lisp is identifying which lisp is causing the issue. There are several ways to do this:

  • Check the command line: When you encounter an error or unexpected behavior in AutoCAD, check the command line for any error messages or references to lisp files.
  • Review startup suite: Lisp files can be loaded automatically when AutoCAD starts up. Check your startup suite to see if any lisp files are being loaded.
  • Inspect custom toolbar buttons or menus: If you have any custom toolbar buttons or menus, they might be executing lisp code. Review them for any references to lisp files.

Note: If you are unsure which specific lisp file is causing the issue, it may be necessary to disable all lisps temporarily and re-enable them one by one until the problem reoccurs.

Disabling a Lisp

To disable a lisp in AutoCAD, follow these steps:

  1. Open the Options dialog: Click on the ‘Application’ button in the top-left corner of the AutoCAD window, then select ‘Options’ from the dropdown menu.
  2. Navigate to the Files tab: In the Options dialog, click on the ‘Files’ tab.
  3. Locate the Support File Search Path: Look for the ‘Support File Search Path’ section in the Files tab. This is where AutoCAD looks for lisp files.
  4. Edit the Support File Search Path: Click on the ‘+’ icon to expand the Support File Search Path section. Remove or disable any paths that point to lisp files you want to disable.
  5. Restart AutoCAD: After editing the Support File Search Path, click ‘OK’ to close the Options dialog, then restart AutoCAD for changes to take effect.

Removing Lisp Files

If you want to permanently remove a lisp file from your system, follow these steps:

  1. Navigate to Lisp Files folder: Open Windows Explorer and go to the folder where your lisp files are stored. By default, this folder is located at: C:\Users\YourUsername\AppData\Roaming\Autodesk\AutoCAD version\Support\{language_code}\acaddoc.lsp
  2. Delete or move lisp files: Locate and delete or move any unwanted lisp files from this folder. You might need administrative privileges to perform this action.

Note: Exercise caution while deleting or moving files as it can affect AutoCAD’s functionality if vital lisp files are removed.

Clean Up Registry Entries (Optional)

If you want to remove any registry entries associated with the lisp files, you can use a reliable registry cleaner tool. However, this step is optional and should be performed with caution.

Conclusion

Removing a lisp in AutoCAD is a straightforward process. By identifying the problematic lisp, disabling it, and optionally removing the associated files, you can resolve issues related to lisps effectively.

We hope this tutorial has helped you understand how to remove a lisp in AutoCAD. If you have any further questions or need assistance, feel free to reach out to us.