Xcode 12b2 crashes at launch on my machine. Xcode 12b1 works fine. Any idea ? Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXCCRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXCCORPSENOTIFY Application Specific Information: ProductBuildVersion: 12A6163b ASSERTION FAILURE in /Library/Caches/com.apple.xbs/Sources/DVTFrameworks/DVTFrameworks-17160.5/DVTFoundation/DeveloperStructure/DVTExtendedPlatformInfo.m:110 Details: (extensionPoint) should not be nil. Object: <DVTExtendedPlatformInfo> Method: +extendedPlatformInfoForPlatformIdentifier:error: Thread: <NSThread: 0x7fc86a51a8e0>{number = 1, name = main} Open FDs: 6/256 Hints: Backtrace: 0 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] (in IDEKit) 1 DVTAssertionHandler (in DVTFoundation) 2 DVTAssertionFailureHandler (in DVTFoundation) 3 75+[DVTExtendedPlatformInfo extendedPlatformInfoForPlatformIdentifier:error:]blockinvoke (in DVTFoundation) 4 dispatchclientcallout (in libdispatch.dylib) 5 dispatchoncecallout (in libdispatch.dylib) 6 +[DVTExtendedPlatformInfo extendedPlatformInfoForPlatformIdentifier:error:] (in DVTFoundation) 7 -[DVTPlatform(DVTExtendedPlatformInfo) dvtextendedInfoOrError:] (in DVTFoundation) 8 +[DVTPlatform validatePlatformDataReturningError:] (in DVTFoundation) 9 IDEInitialize (in IDEFoundation) 10 -[IDEApplicationController applicationWillFinishLaunching:] (in IDEKit) 11 CFNOTIFICATIONCENTERISCALLINGOUTTOANOBSERVER (in CoreFoundation) 12 __CFXRegistrationPost1blockinvoke (in CoreFoundation) 13 CFXRegistrationPost1 (in CoreFoundation) 14 __CFXNotificationPostblockinvoke (in CoreFoundation) 15 -[CFXNotificationRegistrar find:object:observer:enumerator:] (in CoreFoundation) 16 CFXNotificationPost (in CoreFoundation) 17 -[NSNotificationCenter postNotificationName:object:userInfo:] (in Foundation) 18 -[NSNotificationCenter(DVTNSNotificationCenterAdditionsMRR) dvtpostNotificationName:object:userInfo:] (in DVTFoundation) 19 -[NSApplication finishLaunching] (in AppKit) 20 -[DVTApplication finishLaunching] (in DVTKit) 21 -[NSApplication run] (in AppKit) 22 NSApplicationMain (in AppKit) 23 start (in libdyld.dylib) abort() called Application Specific Signatures: ((extensionPoint)) != nil Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libsystemkernel.dylib 0x00007fff6e60533a pthreadkill + 10 1 libsystempthread.dylib 0x00007fff6e6c5e60 pthreadkill + 430 2 libsystemc.dylib 0x00007fff6e58c808 abort + 120 3 com.apple.dt.IDEKit 0x0000000108792bc6 +[IDEAssertionHandler handleAssertionWithLogString:assertionSignature:assertionReason:extraBacktrace:] + 1275 4 com.apple.dt.IDEKit 0x00000001087930cc -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] + 1068 5 com.apple.dt.DVTFoundation 0x0000000106c2c88d DVTAssertionHandler + 476 6 com.apple.dt.DVTFoundation 0x0000000106c2ca90 DVTAssertionFailureHandler + 306 7 com.apple.dt.DVTFoundation 0x0000000106c4c7c9 _75+[DVTExtendedPlatformInfo extendedPlatformInfoForPlatformIdentifier:error:]blockinvoke + 1511 8 libdispatch.dylib 0x00007fff6e464658 dispatchclientcallout + 8 9 libdispatch.dylib 0x00007fff6e4657de dispatchoncecallout + 20 10 com.apple.dt.DVTFoundation 0x0000000106c4c19e +[DVTExtendedPlatformInfo extendedPlatformInfoForPlatformIdentifier:error:] + 639 11 com.apple.dt.DVTFoundation 0x0000000106c4e20f -[DVTPlatform(DVTExtendedPlatformInfo) dvtextendedInfoOrError:] + 68 12 com.apple.dt.DVTFoundation 0x0000000106ae5a9d +[DVTPlatform validatePlatformDataReturningError:] + 362 13 com.apple.dt.IDEFoundation 0x00000001076d3ff8 IDEInitialize + 7706 14 com.apple.dt.IDEKit 0x000000010876e5dc -[IDEApplicationController applicationWillFinishLaunching:] + 622 15 com.apple.CoreFoundation 0x00007fff343cc2c9 CFNOTIFICATIONCENTERISCALLINGOUTTOANOBSERVER + 12 16 com.apple.CoreFoundation 0x00007fff343cc25d __CFXRegistrationPost1blockinvoke + 63 17 com.apple.CoreFoundation 0x00007fff343cc1d2 CFXRegistrationPost1 + 372 18 com.apple.CoreFoundation 0x00007fff343cbe3e __CFXNotificationPostblockinvoke + 80 19 com.apple.CoreFoundation 0x00007fff3439c02c -[CFXNotificationRegistrar find:object:observer:enumerator:] + 1745 20 com.apple.CoreFoundation 0x00007fff3439b3f5 CFXNotificationPost + 1586 21 com.apple.Foundation 0x00007fff36a39786 -[NSNotificationCenter postNotificationName:object:userInfo:] + 59 22 com.apple.dt.DVTFoundation 0x0000000106ac98a0 -[NSNotificationCenter(DVTNSNotificationCenterAdditionsMRR) dvtpostNotificationName:object:userInfo:] + 177 23 com.apple.AppKit 0x00007fff3162a059 -[NSApplication finishLaunching] + 330 24 com.apple.dt.DVTKit 0x0000000107303d88 -[DVTApplication finishLaunching] + 293 25 com.apple.AppKit 0x00007fff31629be0 -[NSApplication run] + 244 26 com.apple.AppKit 0x00007fff315fbb86 NSApplicationMain + 777 27 libdyld.dylib 0x00007fff6e4bdcc9 start + 1