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我正在使用Xcode創建Objective-C，cocoa，mac應用程序。我有一個QuickTime Movie View有一個電影上傳到它。當我按運行，它不工作，窗口不顯示，我的電影不播放！使用QuickTime電影視圖時發生崩潰
的Xcode告訴我這一點：
Thread 1: Program received signal: "SIGABRT"
我怎樣才能得到我的電影的應用程序工作？
我也跟着上一個舊版本的Xcode是YouTube的教程，所以我不知道如何使它在工作的Xcode 4.2
這是控制檯代碼：
GNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Mon Aug 8 20:32:45 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys000
[Switching to process 12270 thread 0x0]
2012-01-18 13:59:44.191 TestMovie[12270:707] An uncaught exception was raised
2012-01-18 13:59:44.192 TestMovie[12270:707] *** -[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (QTMovieView)
2012-01-18 13:59:44.194 TestMovie[12270:707] (
0 CoreFoundation 0x00007fff8b3da286 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8ee9ed5e objc_exception_throw + 43
2 CoreFoundation 0x00007fff8b3da0ba +[NSException raise:format:arguments:] + 106
3 CoreFoundation 0x00007fff8b3da044 +[NSException raise:format:] + 116
4 Foundation 0x00007fff8b6aa7d9 _decodeObjectBinary + 2714
5 Foundation 0x00007fff8b6aba4a -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1193
6 Foundation 0x00007fff8b682530 -[NSArray(NSArray) initWithCoder:] + 486
7 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
8 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
9 AppKit 0x00007fff8a455679 -[NSView initWithCoder:] + 1051
10 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
11 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
12 AppKit 0x00007fff8a546cac -[NSWindowTemplate initWithCoder:] + 3998
13 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
14 Foundation 0x00007fff8b6aba4a -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1193
15 Foundation 0x00007fff8b6ab44b -[NSSet(NSSet) initWithCoder:] + 519
16 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
17 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
18 AppKit 0x00007fff8a357e2d -[NSIBObjectData initWithCoder:] + 2099
19 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
20 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
21 AppKit 0x00007fff8a3574d8 loadNib + 235
22 AppKit 0x00007fff8a356a28 +[NSBundle(NSNibLoading) _loadNibFile:nameTable:withZone:ownerBundle:] + 217
23 AppKit 0x00007fff8a356943 +[NSBundle(NSNibLoading) loadNibFile:externalNameTable:withZone:] + 141
24 AppKit 0x00007fff8a356886 +[NSBundle(NSNibLoading) loadNibNamed:owner:] + 364
25 AppKit 0x00007fff8a5ca637 NSApplicationMain + 398
26 TestMovie 0x0000000100001792 main + 34
27 TestMovie 0x0000000100001764 start + 52
)
2012-01-18 13:59:44.240 TestMovie[12270:707] *** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: '*** -[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (QTMovieView)'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff8b3da286 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8ee9ed5e objc_exception_throw + 43
2 CoreFoundation 0x00007fff8b3da0ba +[NSException raise:format:arguments:] + 106
3 CoreFoundation 0x00007fff8b3da044 +[NSException raise:format:] + 116
4 Foundation 0x00007fff8b6aa7d9 _decodeObjectBinary + 2714
5 Foundation 0x00007fff8b6aba4a -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1193
6 Foundation 0x00007fff8b682530 -[NSArray(NSArray) initWithCoder:] + 486
7 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
8 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
9 AppKit 0x00007fff8a455679 -[NSView initWithCoder:] + 1051
10 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
11 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
12 AppKit 0x00007fff8a546cac -[NSWindowTemplate initWithCoder:] + 3998
13 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
14 Foundation 0x00007fff8b6aba4a -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:] + 1193
15 Foundation 0x00007fff8b6ab44b -[NSSet(NSSet) initWithCoder:] + 519
16 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
17 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
18 AppKit 0x00007fff8a357e2d -[NSIBObjectData initWithCoder:] + 2099
19 Foundation 0x00007fff8b6aa86b _decodeObjectBinary + 2860
20 Foundation 0x00007fff8b6a9b86 _decodeObject + 201
21 AppKit 0x00007fff8a3574d8 loadNib + 235
22 AppKit 0x00007fff8a356a28 +[NSBundle(NSNibLoading) _loadNibFile:nameTable:withZone:ownerBundle:] + 217
23 AppKit 0x00007fff8a356943 +[NSBundle(NSNibLoading) loadNibFile:externalNameTable:withZone:] + 141
24 AppKit 0x00007fff8a356886 +[NSBundle(NSNibLoading) loadNibNamed:owner:] + 364
25 AppKit 0x00007fff8a5ca637 NSApplicationMain + 398
26 TestMovie 0x0000000100001792 main + 34
27 TestMovie 0x0000000100001764 start + 52
)