I just upgraded MacOS to Tahoe 26.6.1, and upgraded XCode too.
Then Xcode crashes on every launch and is completely unusable.
Translated Report (Full Report Below)
-------------------------------------
Process: Xcode [1718]
Path: /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier: com.apple.dt.Xcode
Version: 26.6 (24959)
Build Info: IDEApplication-24959000000000000~2 (17F113)
Code Type: ARM-64 (Native)
Role: Background
Parent Process: launchd [1]
Coalition: com.apple.dt.Xcode [917]
User ID: 502
Date/Time: 2026-08-13 11:26:33.1318 +0800
Launch Time: 2026-08-13 11:26:33.0308 +0800
Hardware Model: Mac16,8
OS Version: macOS 26.6.1 (25G76)
Release Type: User
Crash Reporter Key: ED18B1CA-EA9C-0657-0CF1-1EFA8C60919E
Incident Identifier: 8350CBBA-0B41-4A77-B262-CD0662709FB1
Time Awake Since Boot: 47 seconds
System Integrity Protection: disabled
Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Termination Reason: Namespace SIGNAL, Code 6, Abort trap: 6
Terminating Process: Xcode [1718]
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x1843745e8 __pthread_kill + 8
1 libsystem_pthread.dylib 0x1843af8d8 pthread_kill + 296
2 libsystem_c.dylib 0x1842b5978 abort + 148
3 libsystem_c.dylib 0x1842b5a94 abort_report_np + 84
4 Xcode 0x102624ed0 main.cold.1 + 36
5 Xcode 0x102624e1c main + 340
6 dyld 0x183fe44e4 start + 6992
Thread 0 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000000 x1: 0x0000000000000000 x2: 0x0000000000000000 x3: 0x0000000000000000
x4: 0x0000000000000073 x5: 0x000000000000002e x6: 0x000000016d7db278 x7: 0x0000000000000000
x8: 0x61cbe9e2533f85e8 x9: 0x61cbe9e3a3e16468 x10: 0x0000000000000002 x11: 0x00000000fffffffd
x12: 0x0000000000000000 x13: 0x0000000000000000 x14: 0x0000000000000000 x15: 0x0000000000000000
x16: 0x0000000000000148 x17: 0x00000001f242f400 x18: 0x0000000000000000 x19: 0x0000000000000006
x20: 0x0000000000000103 x21: 0x00000001f0dee260 x22: 0x0000000102d5cbe0 x23: 0x00000001f0df5908
x24: 0x0000000000000001 x25: 0x000000016d7db6d0 x26: 0x00000001f0defa70 x27: 0x0000000000000000
x28: 0x0000000000000000 fp: 0x000000016d7db3f0 lr: 0x00000001843af8d8
sp: 0x000000016d7db3d0 pc: 0x00000001843745e8 cpsr: 0x40000000
far: 0x0000000000000000 esr: 0x56000080 (Syscall)
Binary Images:
0x102624000 - 0x102627fff com.apple.dt.Xcode (26.6) <8025d4bb-71ea-3f57-bade-2e3c847b6cf3> /Applications/Xcode.app/Contents/MacOS/Xcode
0x18436b000 - 0x1843a82e7 libsystem_kernel.dylib (*) <7cfb3a10-adb2-32c4-99b5-922a111b3224> /usr/lib/system/libsystem_kernel.dylib
0x1843a9000 - 0x1843b5b3b libsystem_pthread.dylib (*) <12342372-0084-37a5-9ea6-2e4dc940c685> /usr/lib/system/libsystem_pthread.dylib
0x18423d000 - 0x1842be1e7 libsystem_c.dylib (*) <fdc4e366-5c14-3a1e-bc35-d933d28cdcf3> /usr/lib/system/libsystem_c.dylib
0x183fc4000 - 0x1840774ff dyld (*) <df42dd9d-ad11-33a7-8849-9ad5df30a274> /usr/lib/dyld
0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???
