# Install error on ZenDock 1.3.1.0 on Blender 4.5.8LTS

**URL:** <https://support.zenmasters.team/t/install-error-on-zendock-1-3-1-0-on-blender-4-5-8lts/198>\
**Category:** Zen Dock\
**Created:** [July 9, 2026, 11:56am UTC](https://support.zenmasters.team/t/install-error-on-zendock-1-3-1-0-on-blender-4-5-8lts/198 "2026-07-09T11:56:38Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/zensupport/original/1X/38d77f43f644941aabe5dd4cc3948d3eb1fbd3c3.png) [@system](https://support.zenmasters.team/u/system)\
**Post date:** [July 9, 2026, 11:56am UTC](https://support.zenmasters.team/t/install-error-on-zendock-1-3-1-0-on-blender-4-5-8lts/198/1 "2026-07-09T11:56:38Z")

</div>

### tmorgan497

Getting this error when trying to install ZenDock 1.3.1.0 for Blender 4.5.8 LTS. Am I using the wrong ZenDock version? I purchased it from BlenderMarket/Superhive, but this is the only version that was available for me to download.

```auto
  File "C:\Program Files\WindowsApps\BlenderFoundation.Blender4.5LTS_4.5.8.0_x64__ppwjx1n5r4v9t\Blender\4.5\scripts\addons_core\bl_pkg\bl_extension_ops.py", line 1502, in execute
    cmd_batch = self.exec_command_iter(is_modal)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\WindowsApps\BlenderFoundation.Blender4.5LTS_4.5.8.0_x64__ppwjx1n5r4v9t\Blender\4.5\scripts\addons_core\bl_pkg\bl_extension_ops.py", line 2593, in exec_command_iter
    self.exec_legacy(source_filepath)
  File "C:\Program Files\WindowsApps\BlenderFoundation.Blender4.5LTS_4.5.8.0_x64__ppwjx1n5r4v9t\Blender\4.5\scripts\addons_core\bl_pkg\bl_extension_ops.py", line 2726, in exec_legacy
    bpy.types.PREFERENCES_OT_addon_install.execute(self, bpy.context)
  File "C:\Program Files\WindowsApps\BlenderFoundation.Blender4.5LTS_4.5.8.0_x64__ppwjx1n5r4v9t\Blender\4.5\scripts\startup\bl_operators\userpref.py", line 830, in execute
    bpy.ops.preferences.addon_enable(module=mod. __name__ )
  File "C:\Program Files\WindowsApps\BlenderFoundation.Blender4.5LTS_4.5.8.0_x64 __ppwjx1n5r4v9t\Blender\4.5\scripts\modules\bpy\ops.py", line 109, in__ call__
    ret = _op_call(self.idname_py(), kw)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Error: register_class(...): already registered as a subclass 'ZENWBLIST_OT_entry_remove'
register_class(...): already registered as a subclass 'ZENWBLIST_OT_entry_remove'

```

Imported from [Discord](https://discord.com/channels/695619708879372398/1492249800563884145/1492249800563884145)

---

<div class="post-metadata">

**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/zensupport/original/1X/38d77f43f644941aabe5dd4cc3948d3eb1fbd3c3.png) [@system](https://support.zenmasters.team/u/system)\
**Post date:** [July 9, 2026, 11:56am UTC](https://support.zenmasters.team/t/install-error-on-zendock-1-3-1-0-on-blender-4-5-8lts/198/2 "2026-07-09T11:56:39Z")

</div>

### AlexZhornyak

Hi, it seems like it is not installed properly. Try to:

1. Uninstall
2. Restart Blender
3. Install
4. Restart Blender  
Imported from [Discord](https://discord.com/channels/695619708879372398/1492249800563884145/1492752370545852618)