有时我的应用程序中有以下警告，然后应用程序冻结并停止工作。我不知道为什么会这样。有人可以帮助我吗？
> <Warning>: CoreAnimation: warning, deleted thread with uncommitted CATransaction; created by:
0 QuartzCore 0x32f303b3 <redacted> + 266
1 QuartzCore 0x32f30269 <redacted> + 224
2 QuartzCore 0x32f308c7 <redacted> + 30
3 QuartzCore 0x32f33bf3 <redacted> + 182
4 QuartzCore 0x32f8b985 <redacted> + 36
5 UIKit 0x3383ec57 <redacted> + 30
6 UIKit 0x334eca33 <redacted> + 114
7 UIKit 0x33413aab <redacted> + 246
8 UIKit 0x3383a6a1 <redacted> + 160
9 Program_TV_Pro 0x00017b3b -[MainMenuViewController grabURLInBackgroundForEntryFromAppDelegate] + 1166
10 Program_TV_Pro 0x000180a3 __49-[MainMenuViewController contextChannelsChanged:]_block_invoke + 138
11 libdispatch.dylib 0x3b800d1b <redacted> + 10
12 libdispatch.dylib 0x3b807d71 <redacted> + 220
13 libdispatch.dylib 0x3b807f59 <redacted> + 56
14 libsystem_pthread.dylib 0x3b942dbf _pthread_wqthread + 298
15 libsystem_pthread.dylib 0x3b942c84 start_wqthread + 8
并在另一个时间警告：
CoreAnimation: warning, deleted thread with uncommitted CATransaction; created by:
0 QuartzCore 0x32f303b3 <redacted> + 266
1 QuartzCore 0x32f30269 <redacted> + 224
2 QuartzCore 0x32f31871 <redacted> + 24
3 QuartzCore 0x32f3207f <redacted> + 130
4 UIKit 0x3338a3d7 <redacted> + 1562
5 Program_TV_Pro 0x00115c2b -[ReplaysTableViewController downloadReplays] + 346
6 Program_TV_Pro 0x00113cbb __41-[ReplaysTableViewController viewDidLoad]_block_invoke52 + 46
7 libdispatch.dylib 0x3b800d1b <redacted> + 10
8 libdispatch.dylib 0x3b807d71 <redacted> + 220
9 libdispatch.dylib 0x3b807f59 <redacted> + 56
10 libsystem_pthread.dylib 0x3b942dbf _pthread_wqthread + 298
11 libsystem_pthread.dylib 0x3b942c84 start_wqthread + 8