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.

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.

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.