I'm trying to download and install the MTree Addon (latest release) from Github on a MacBook Pro Catalina 10.15.7 Blender v2.83.4.
It is the first time I'm trying to download a 3rd party addon, so it's highly likely that I'm making a mistake.
What I've done so far:
Downloaded the .zip file from Github and unzipped it
Copied the file containing the .py scripts and pasted it in the Blender "addons"-folder
Opened Blender then Edit>Preferences>Add-ons, where the checkbox for the mtree-addon doesn't seem to show up.
Then I tried:
Copy same folder containing .py files
Pasted it in the "addons_contrib"-folder
And this message shows up in the "Add-ons" section of "Preferences" in Blender:
This conflict confuses me, since it means that the contents of the folders are recognized but, as I said, the checkbox for the add-on doesn't appear in the Preferences.
Any help or idea as to what could be the problem?