I've installed Xcode 26.0 beta (17A5241e), and if I select my project from the Welcome to Xcode dialog, Xcode crashes.
I've attempted this 10 times with the same result each time.
What should I do?
Thank you.
Xcode 26 crashes on project open
This is a known issue. To work around remove the UserInterfaceState.xcuserstate file inside your project document.
As the engineer above wrote, the answer to this question is in the Xcode 26 release notes:
Xcode may crash on launch restoring UI state. (152042209) Workaround: Remove your UserInterfaceState.xcuserstate file from the project/workspace.
In macOS Terminal, you can find this file in your Xcode project directory tree with:
find . -name '*.xcuserstate' -print
and then delete it with rm.
I have been assured that this is a cache file and contains no important project state and is safe to remove.
I am facing the same behavior - just installed XCode 16.4. (MBProM4/MacOS15.5) Deleting the file stated above didn't help. It still crashes.
I am really out of ideas what to do.