I upgraded to 15.4.1 today and my Messages app will no longer stay open. It's quit/poof/gone every time I go look. I've done a restart (both of the app and of the whole computer) and also synced with iCloud but it's still crashed dozens of times today since my update. I also can't seem to "search" within iCal anymore.
[Re-Titled by Moderator]
MacBook Air, macOS 15.4
My imac is at version 12.7.6 Monterey. I don't think it can go any higher since it's a late 2015. But it works fine...except for the Messages app, which just started crashing as it attempts to launch a few days ago. The first time this happened I had opened it without incident earlier in the day. But I have not been able to open it since the first crash. I've sent in a report to Apple each time this occurs. I'd love to know what I can do to make it work, as I use it a lot in my business to transfer messages from clients from my phone to my computer, and this is making certain things really hard to do.
Unable to fix Messages app crashing issue after upgrading to macOS 15.4.1
