Blender Add-on Not Working After Update

How to fix it

Try these in order — the most common fix is first.

1. 1. Update or reinstall the add-on

   Copy steps
   1. Open Edit > Preferences > Add-ons and check for a new version.
   2. Install the version built for your Blender release.
   Did this fix it? Yes No

2. 2. Read the error

   Copy steps
   1. Run Blender from a terminal to see the traceback.
   2. If it fails to import a .pyd or .so library, the build does not match your platform.
   Did this fix it? Yes No

3. 3. Keep versions side by side

   1. Install the older Blender in a separate folder for projects that depend on the add-on.
   Did this fix it? Yes No

Symptoms

An add-on vanishes, throws a Python traceback, or fails to enable after upgrading Blender.

Why it happens

• Add-on built for an older Blender/Python version
• Precompiled libraries incompatible with your OS or Python
• Add-on moved to Extensions platform

This guide also covers

• blender addon not working
• blender addon broke after update
• blender add-on error
• blender python error addon

Other Blender errors

• Blender Crashing When Rendering
• Blender GPU Not Detected / Not Showing in Preferences
• Blender CUDA / OptiX Error: Kernel Compilation Failed
• Blender Out of Memory Error When Rendering
• Blender Viewport Lag / Slow Viewport
• Blender Pink Textures / Missing Textures
• Blender FBX Export Textures Missing
• Blender glTF Export Missing Materials or Textures