Install fix
Chat GPT helped get this add on fixed for 3.5 blender for mac. Quote from ChatGpt
"It appears that the issue is related to the path where the add-on is located. The error message indicates that the source file is in the add-on search path, which can cause conflicts. To resolve this, you should move the source file(s) for your add-on to a location outside of the add-on search path.
Here are the steps to resolve the issue:
Move Source Files: Move the source files for your add-on, specifically the io_mesh_3mf directory, to a location outside of the Blender add-on search path. Based on the path you provided, it should be moved to a different directory.
Update Import Statements: Review your import statements in the add-on code and make sure they reference the correct paths after you've moved the source files.
Reload the Add-on: After making these changes, disable and then re-enable the add-on in Blender's preferences to ensure that the changes take effect.
By moving the source files outside of the add-on search path, you should be able to resolve the issue and use your add-on without encountering the "Source file is in the add-on search path" error."
DO this 1). Download the zip file 2). move file io_mesh_3mf out of file Blender3mfFormat-master 3). compress or zip file io_mesh_3mf 4). go to install blender add on 5). instal io_mesh_3mf 6). enable add on
Should work. or install this file and download into blender io_mesh_3mf.zip
Hello, thank you for this tip. I don't know how to make the modifications for Macos, but the original file to download says it's v1.0.1, but is 1.0.0 in the init actually. So here is the fixed v1.0.2 to avoid potential conflicts if the file has already been installed. Blender_3mf_v1.0.2.zip
Installing via the "Install..." button in the add-ons window still works for me. It puts it in the correct location automatically. That is the instruction in the readme. Does it not work for you that way?