capella 9 has moved to a new development environment. This version includes adaptations to this development environment and bugfixes.
Important: As a side effect, this version will no longer run with macOS 10.11 and 10.12 (as well as older versions).
For more details see capella version history.
How to update: In the Help menu, select the command "Online update". In the dialog click on "Search now". Confirm the update with "Yes" and follow the installation instructions.