Mail.app crashes on launch in MacOS 26b2

Just did an update from MacOS 26b1 to b2 and now the Mail app crashes on launch (Thread 0 - something to do with fonts and the webkit. Happens every time on launch of the Mail app.

Have you raised a Feedback report? If not, please do so at https://feedbackassistant.apple.com/ then post the FB number here.

FB number: FB18349199

I just upgraded and have the same problem. I did not upgrade from Beta 1. Also Safari and Passwords crash.

So... Things I've tried so far: -Reboot : .. mail and safari crash as before...

  • Re-install MacOS26: ,mail and safari crash as before...

Looking at the stack dump, for both mail and safari, the crash is the same and seems to be related to webkit loading user fonts... 2 WebKit 0x1b216a050 WebKit::addUserInstalledFontURLs(NSString*,...

I wonder if it's some really old font I've had for 10 years that was corrupt or something...

And another app. Tips is crashing as well. All three apps (Tips, Mail, Safari) crash at the same point in WebKit, loading user installed Fonts.

I've tried emptying my ~/library/fonts folder but that didn't help either.

Mail.app crashes on launch in MacOS 26b2
 
 
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