MCG in Modifier Sets not loading on startup

[Anonymous]

Hello everybody, a slight annoyance I've run into:

After having installed the "Attach Mesh" MCG by Ivan Max (https://gumroad.com/ivanmax#LbRbN) I tried to add it to a modifier set for quick access which works fine - until I restart Max, whereupon the button it would sit at comes up empty. I seem to remember this happening with other MCG modifiers as well - as if they load after the modifier sets are initialized or something.

Any leads, anybody?

[cirrusx360]

I have this same issue with MCG_R-Clone_JC modifier. It was a free script, super handy, but it won't stay on my Modifier Set for quick access. Anyone find a solution? Sorry this is kinda a thread bump, but glad I did the research and found an existing thread rather than start a duplicate.

Edit: the Symmetry modifier in 2022 is actually so great I wouldn't need the script going forward. But still would be nice to find a way to load script at start.