Can't enable addon

I followed pip installation for Mac users with success, but enabling the add-on fails. It seems to me rhino3dm can’t be installed.

Terminal log from pip installation: installation_pip.txt

Terminal log running Blender from terminal with rhino3dm installation process: installation_rhino3dm.txt

Sorry, I’m not a command line user, so I just noticed to consider update pip 19.0.3 to 19.3.1 (that’s what I thought I did right now with your instructions) and try to install rhino3dm manually.

First I tried to update pip from home dir with pip install --upgrade pip

… but “command not found”. So I wanted to try install rhino3dm manually pip3 install --upgrade --target /Users/filip/Library/Application Support/Blender/2.81/scripts/addons/modules rhino3dm

… but it failed too - like if the path exists? If “path” means directory, so Yes -exists, I can see empty “module” folder it that directory. In this log Terminal mentions even I use pip 9.0.3 ?! installation_rhino3dm_manually.txt

Any advice or direction to hunt issue? Thank you for help.

Screenshots

Desktop (please complete the following information):

• OS: X 10.12.6
• Blender 2.81a / 2.82alpha

Additional context

[synxroform]

Oh my ###, just realized i install it from master-branch zip file. Now it works, thank you !!!

[iuviene]

Add on installs without any errors but won’t appear in add-ons afterwards nor is it available in the import or export menus.

Blender v2.81.16 on macOS 10.14.6