# Error when trying to install on ArchLinux **URL:** \ **Category:** Zen UV\ **Tags:** bug\ **Created:** [April 15, 2025, 9:50pm UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69 "2025-04-15T21:50:02Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Galnart](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/galnart/32/60_2.png) [@Galnart](https://support.zenmasters.team/u/Galnart)\ **Post date:** [April 15, 2025, 9:50pm UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/1 "2025-04-15T21:50:03Z")
register\_class(…): already registered as a subclass ‘ZENUVLIST\_OT\_entry\_remove’ ---
**Author:** ![Alexander\_Zhornyak](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/alexander_zhornyak/32/6_2.png) [@Alexander\_Zhornyak](https://support.zenmasters.team/u/Alexander_Zhornyak)\ **Post date:** [April 16, 2025, 6:18am UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/2 "2025-04-16T06:18:08Z")
Hi, it seems to be wrongly upgraded using Copy New Settings Blender option while upgrading to the highest version. The possible workaround: 1. Uninstall addon (Remove) 2. Restart Blender 3. Install addon 4. Restart Blender ---
**Author:** ![Galnart](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/galnart/32/60_2.png) [@Galnart](https://support.zenmasters.team/u/Galnart)\ **Post date:** [April 16, 2025, 11:32pm UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/3 "2025-04-16T23:32:48Z")
No module named ‘imghdr’ ---
**Author:** ![Alexander\_Zhornyak](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/alexander_zhornyak/32/6_2.png) [@Alexander\_Zhornyak](https://support.zenmasters.team/u/Alexander_Zhornyak)\ **Post date:** [April 17, 2025, 6:37am UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/4 "2025-04-17T06:37:36Z")
ZenUV does not use any module with such name. And provide the full debug log file the next time, please ---
**Author:** ![Galnart](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/galnart/32/60_2.png) [@Galnart](https://support.zenmasters.team/u/Galnart)\ **Post date:** [April 17, 2025, 1:44pm UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/5 "2025-04-17T13:44:26Z")
Python: Traceback (most recent call last): File “/usr/share/blender/4.4/scripts/addons\_core/bl\_pkg/bl\_extension\_ops.py”, line 1499, in execute cmd\_batch = self.exec\_command\_iter(is\_modal) File “/usr/share/blender/4.4/scripts/addons\_core/bl\_pkg/bl\_extension\_ops.py”, line 2589, in exec\_command\_iter self.exec\_legacy(source\_filepath) ~~~~~~~~~~~~~~~~ ^^^^^^^^^^^^^^^^^ File “/usr/share/blender/4.4/scripts/addons\_core/bl\_pkg/bl\_extension\_ops.py”, line 2722, in exec\_legacy bpy.types.PREFERENCES\_OT\_addon\_install.execute(self, bpy.context) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^^^^^^^^^^^^^^^^^^^ File “/usr/share/blender/4.4/scripts/startup/bl\_operators/userpref.py”, line 813, in execute bpy.ops.preferences.addon\_enable(module=mod. **name** ) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^^^^^^^^^^^^^^^^^^^^^ File “/usr/share/blender/4.4/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 ‘ZENUVLIST\_OT\_entry\_remove’ and if i restart blender and tries to activate it it just say No module named ‘imghdr’ gonna see if i can generate a log file so you can see the actual debug stuff ---
**Author:** ![Alexander\_Zhornyak](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/alexander_zhornyak/32/6_2.png) [@Alexander\_Zhornyak](https://support.zenmasters.team/u/Alexander_Zhornyak)\ **Post date:** [April 17, 2025, 2:00pm UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/6 "2025-04-17T14:00:46Z")
> [@Galnart](#): > > imghdr My bad, I forgot that Checker system uses imghdr module. So you need to install this module manually using pip, because in Windows, Mac other Linux, it is deployed by default ---
**Author:** ![Alexander\_Zhornyak](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/alexander_zhornyak/32/6_2.png) [@Alexander\_Zhornyak](https://support.zenmasters.team/u/Alexander_Zhornyak)\ **Post date:** [April 17, 2025, 2:08pm UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/7 "2025-04-17T14:08:29Z")
> I see that it is removed from Python 3.13 and seems that in your system Python version is different from other OS ---
**Author:** ![Galnart](https://yyz1.discourse-cdn.com/flex011/user_avatar/support.zenmasters.team/galnart/32/60_2.png) [@Galnart](https://support.zenmasters.team/u/Galnart)\ **Post date:** [April 17, 2025, 2:40pm UTC](https://support.zenmasters.team/t/error-when-trying-to-install-on-archlinux/69/8 "2025-04-17T14:40:49Z")
Sorry, started issues because i was lazy and wanted to update blender through my system update so i installed it from repository. now i installed the tar from the website which provide it’s own python instead of the system python, and then it works without issues.