[Corlantis]

I was having the same problem and, in case this helps someone else, here's what I found to make this work.

I have moved my documents folder on another hard drive (to optimize the main drive SSD space). I linked the documents folder in this drive (F: ) to C:/users/<username>/My Documents

If I enter the C: path (this works in Windows Explorer and all other programs I have tested with so far), Minion does NOT detect the add-ons in my directory.

When I entered the path on the F: drive (i.e. to the same location), it finally worked!