Hi, I've been using Keyboard Maestro for about 15 years or so, but I have not created a macro in a long time. For some reason, I am unable to input the hot key stroke under "This hot key:" When I type nothing happens. I've been searching around for the answer but couldn't find anything. It seems like there was at least one other similar post with no clear answer. I think it has to do with accessibility, but following the suggestions has not worked either.
Thank you! I can now type in a hot key. Now I have to figure out how to turn the Keyboard Maestro Engine back on. I can go into the app package and find it there to double click on, but it's not showing up again in the system preferences (it disappeared when I unchecked it before).
Awesome! Thanks tjluoma. I had opened the application package before, using the control key, but I didn't know to drag the Keyboard Maestro Engine.app icon into the Privacy/Accessibility window.
So to sum up, I deselected "Keyboard Maestro Engine.app" and "Keyboard Maestro.app" in System Preferences/Security & Privacy/Privacy tab/Accessibility. Then, I turned them back on. In order to turn "Keyboard Maestro Engine.app" back on I had to drag its icon (found in the application package via a Terminal command: open -R '/Applications/Keyboard Maestro.app/Contents/MacOS/Keyboard Maestro Engine.app') back into the Accessibility window.
I hope this summary makes sense to anyone who might come across it in the future. Thanks again for all your help!
I did what tjluoma suggested in this quote from above (below the screen shot). However, I could not just re-check Keyboard Maestro Engine.app. I had to drag it into the Accessibility window in the system preferences. You can find this app inside the application package. Follow the directions in my summary above.