I just run a very simple NSAppleScript： "do shell script \"echo command\" with administrator privileges" However， I got error as below： NSAppleScriptErrorNumber = "-2147450879"; But it works fine on my friend‘s mac, anybody know how to solve this problem.

We have an Mac app, which worked fine on 10.14 and 10.15. Howerver when user upgrade to Big sur, we get a lot about crash log. Such as below, it seems not crash on our Application. Thread 2 Crashed:: Dispatch queue: com.apple.root.user-interactive-qos 0 libsystem_platform.dylib 0x00007fff204a3673 os_unfair_lock_lock + 10 1 com.apple.AppKit 0x00007fff22f5c83e -[NSScreenDisplayLink _fire] + 46 2 com.apple.AppKit 0x00007fff236ea2cd ___NSRunLoopTimerCreateWithHandler_block_invoke + 34 3 com.apple.CoreFoundation 0x00007fff2057290d CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION + 20 4 com.apple.CoreFoundation 0x00007fff205723e8 __CFRunLoopDoTimer + 922 5 com.apple.CoreFoundation 0x00007fff20571f42 __CFRunLoopDoTimers + 307 6 com.apple.CoreFoundation 0x00007fff2055857f __CFRunLoopRun + 2008 7 com.apple.CoreFoundation 0x00007fff205576ce CFRunLoopRunSpecific + 563 8 com.apple.Foundation 0x00007fff212e4fa1 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212 9 com.apple.AppKit 0x00007fff22ffa49c -[NSAnimation(NSInternal) _runBlocking] + 453 10 com.apple.AppKit 0x00007fff22ffa25a __42-[NSAnimation(NSInternal) _runInNewThread]_block_invoke + 97 11 libdispatch.dylib 0x00007fff202b55dd _dispatch_call_block_and_release + 12 12 libdispatch.dylib 0x00007fff202b67c7 _dispatch_client_callout + 8 13 libdispatch.dylib 0x00007fff202c59b5 _dispatch_root_queue_drain + 676 14 libdispatch.dylib 0x00007fff202c5fb8 _dispatch_worker_thread2 + 92 15 libsystem_pthread.dylib 0x00007fff2045e453 _pthread_wqthread + 244 16 libsystem_pthread.dylib 0x00007fff2045d467 start_wqthread + 15 I only reproduce from Xcode once, as show Below, anyone who know how to solve this problem.

I get many crash logs from my mac app as below: Application Specific Information: assertion failure: "(self)-_enumeratingSubviewsCount ((1 6) - 1)" - %lld I know literal meaning when a super view have subviews more than 2 to the 6th power, which is 128. However, when I make a test app, which addSuviews to 200. But it doesn't crash. The test demo code show below    for (int i = 0; i 200; i++) {     NSView *view = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 20, 20)];     [self.window.contentView addSubview:view];   } Anybody know how to fix this problem. Thanks.