It’s great that there’s a “6” folder for 6-only stuff - but if I need my plug-in to work in 5 as well, I am constantly confronted with this. My humble suggestion is to ignore any filename in the normal libraries folder IF a matching filename is present in 6, giving 6 versions priority - but open to any other solution to this problem. A “remember my choice” option here might also do the trick. Thoughts @DavidRutten et al?