as topic, thank you very much!
may need an update? Custom mapping working here on my machine-
Work In Progress
Rhino 7 SR0 2020-5-26 (7.0.20147.12475)
oh. no… I work on Window 7…
sorry… v7 rhino only and that only runs on win 10.
you can (and will want to) upgrade for free to win 10 here: https://www.cnet.com/how-to/how-to-download-windows-10-for-free-now-that-windows-7-is-dead/