Addon not appearing in Blender's File menu

[MRIO]

Greetings Martin, and thanks for making this available!

I am trying to install the addon in Blender 3.1 in a mac, and although the addon is enabled (attachment 1) , it does not show under File > Import (attachment 2). Are you aware of this? Any guesses as for what could be happening?

[MRIO]

Turns out the problem is that some attributes of types no longer exist in versions of Blender after 2.74:

  File "/Users/m/Library/Application Support/Blender/3.1/scripts/addons/operator_swc_import.py", line 116, in register
    bpy.types.INFO_MT_file_import.append(menu_func_import)
AttributeError: 'module' object has no attribute 'INFO_MT_file_import'

I'm not clear yet on how to create the menu items here, suggestions appreciated.