The steps to reproduce it. Include a screenshot or world file if possible
start World Machine. Boom.
This is probably an incompatibility between the Qt 6.11.1 bundled in the app and macOS 27.2’s stricter CoreGraphics (populateDeviceMenu → QImage::toCGImage).
The next build is going to be out very soon; I will try to repro this and get it fixed for that release. I have not updated to golden gate myself yet for testing.
Build 4069 is now available and fixes this MacOS 27.2 issue. You’ll have to download directly from the Update Center since the in-app upgrader is obviously not available when the app won’t run