Installed Catalina 10.15.4 now KM doesn't work...Help! Any known fixes?

[Laughmaster]

Installed Catalina 10.15.4 now KM doesn't work...Help! Any known fixes?

[kcwhat]

TIP: Resolving Catalina/Mojave Accessibility/Security Permissions Issues

Catalina (and Mojave really) Accessibility and Security Permissions UPDATED: 2020-02-05 @JMichaelTX noted that there are still people having troubles with Catalina and its accessibility issues. So lets make this clear - Keyboard Maestro itself has no known problems with Catalina or Mojave. However, Mojave and Catalina have two accessibility settings bugs which can cause problems trying to enable accessibility permissions for Keyboard Maestro and Keyboard Maestro Engine (which is required fo…