Today, I
- updated macOS on a M1 MacBook Air to Tahoe version 26.5.1.
- installed (from scratch) Lightroom Classic version 15.3.1
- installed (from scratch) Negative Lab Pro version 3.1.1
Doing this, I found the following things that seemed less than ideal - and the respective fixes
-
lemonsqueezy did NOT have my license key
this issue was easily fixed because I do note license keys and do backups. -
the keyboard shortcut was missing
this issue was fixed by running the NLP installer again. -
my presets wouldn’t be stored, as the Negative Lab Pro folder was set with owner=System
this issue was fixed by setting owner to (account name) and applying it to all objects within.

Others have come across these issues and fixes.
This is just a compilation that I hope will help others.