What do I need to do if I upgraded my macOS to Catalina and my software doesn’t open? Marisa Labrador June 08, 2021 13:54 Updated Follow If you are using Harmony 16 or Storyboard Pro 6 (or prior versions), you need to revert to the previous version of macOS. Related articles What impact will upgrading to macOS Catalina have on my software? Mac OS Monterey (12.01) Apple computers using M1 chips Harmony 21.0.1 Release Notes Will the release of Catalina affect Toon Boom software on Linux or Windows OS? Comments 0 comments Article is closed for comments.