Blender 2.93.3 > says it's installed but not listed in addons about blender3mfformat

[neophyl]

Have you changed the selection for the add-ons to include "Testing" ? I had to turn that on before it would appear.

[numanair]

In 3.5 release the Testing tab is hidden. I used these steps to re-enable the tab's visibility.
https://blenderartists.org/t/blender-3-5-and-addons-folder/1457584/12

[nils-a]

The answer from @numanair works perfect in blender 3.5: If the Testing-Tab in add-ons is not visible, simply go to [blender-installation]/scripts/startup/bl_ui/__init__.py and make sure the Testing tab is "enabled" for your installation.

This can be done by commenting line 149 out and un-indent line 150 like so:

After that, the Testing-Tab is visible again:

[Ghostkeeper]

Until this is accepted as a community add-on here, the "testing" add-ons will need to be activated in order to load this.

[dirtdigger]

I also am having this problem. Installed from zip, it says it was successful in the console, and I can find it under my user scripts. But even though I refresh and enable testing, nothing. Any ideas or suggestions?

[tremosian]

I had a similar issue when using Blender 3.3, and installed it using the version found here:

https://developer.blender.org/T84154