Replied via email, hope we'll get to the bottom of this!
My 1.6 will not load either.
Windows 10.
Please download the latest version 1.6.1 that should hopefully fix the startup error: https://lesspain.software/kyno/download/
Let me know if that helps.
Gary Baker
Downloaded the current free trail Mac
and un-zip it. Double click on the app icon and it loads to the splash page and halts.
My system:
Any help - thanks!