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The business I work for is currently running Mac OSx 10.7.5. We use it for a DJ mixing service in a club. Over the last few hours, the computer has crashed a number of times. It doesn't matter if we're running MegaSeg (mixing software), or just running of iTunes, after a while, we'll get the spinning beach ball of death. I found the error report, and I'm trying to understand it, but my knowledge in computer science and programming is still at fledgling level. Can anyone tell me what is causing the problem?

Error:

    Process:         qlmanage [811]
    Path:            /usr/bin/qlmanage
    Identifier:      qlmanage
    Version:         ??? (???)
    Code Type:       X86-64 (Native)
    Parent Process:  ??? [1]

    Date/Time:       2014-02-14 00:09:36.757 -0600
    OS Version:      Mac OS X 10.7.5 (11G63)
    Report Version:  9

    Crashed Thread:  4  Dispatch queue: com.apple.audio.SandboxHelper.xpcq

    Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
    Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000

    VM Regions Near 0:
    --> 
        __TEXT                 0000000101b7a000-0000000101bd8000 [  376K]              r-x/rwx SM=COW        /System/Library/Frameworks/QuickLook.framework/Versions/A/Resources/quicklookd .app/Contents/MacOS/qlmanage

    Application Specific Information:
    qlmanage --diag 6571367.5409932 
    objc[811]: garbage collection is OFF

    Thread 0:: Dispatch queue: com.apple.main-thread
    0   libsystem_kernel.dylib          0x00007fff8448bbca   __psynch_cvwait + 10
    1   libsystem_c.dylib               0x00007fff868b8274  _pthread_cond_wait + 840
    2   com.apple.CoreMedia             0x00007fff8ce63a5d WaitOnCondition + 14
    3   com.apple.CoreMedia             0x00007fff8ce63c55 FigSemaphoreWaitRelative + 181
    4   com.apple.QTKit                 0x00007fff8d377826 +[QTMovie_FigMedia validationAttibutesForURL:fileTypes:withAttributes:error:] + 669
    5   com.apple.QTKit                 0x00007fff8d345d11 +[QTMovie mediaHelperClassForAttributes:error:additionalAttributes:] + 562
    6   com.apple.QTKit                 0x00007fff8d34587c -[QTMovie initWithAttributes:error:] + 724
    7   com.apple.qlgenerator.audio     0x0000000101cfa152 0x101cf8000 + 8530
    8   com.apple.qlgenerator.audio     0x0000000101cf9b4f 0x101cf8000 + 6991
    9   com.apple.QuickLookFramework    0x00007fff88ce94a3 _QLThumbnailRequestDispatch + 600
    10  qlmanage                        0x0000000101bb2071 0x101b7a000 + 229489
    11  qlmanage                        0x0000000101b848c4 0x101b7a000 + 43204
    12  qlmanage                        0x0000000101b872b4 0x101b7a000 + 53940
    13  com.apple.QuickLookFramework    0x00007fff88ce3f48 ___QLGeneratorDispatchBlock_block_invoke_2 + 20
    14  com.apple.QuickLookFramework    0x00007fff88d17691 QLTryCatchAndCrash(void ( block_pointer)()) + 17
    15  libdispatch.dylib               0x00007fff8ffd0a82 _dispatch_call_block_and_release + 18
    16  libdispatch.dylib               0x00007fff8ffd28f2 _dispatch_main_queue_callback_4CF + 308
    17  com.apple.CoreFoundation        0x00007fff88d9ee7c __CFRunLoopRun + 1724
    18  com.apple.CoreFoundation        0x00007fff88d9e486 CFRunLoopRunSpecific + 230
    19  com.apple.Foundation            0x00007fff8ea94f7b -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 267
    20  com.apple.Foundation            0x00007fff8ea94e67 -[NSRunLoop(NSRunLoop) run] + 62
    21  qlmanage                        0x0000000101b9c168 0x101b7a000 + 139624
    22  qlmanage                        0x0000000101b7ccbb 0x101b7a000 + 11451
    23  qlmanage                        0x0000000101b7b544 0x101b7a000 + 5444

    Thread 1:: Dispatch queue: com.apple.libdispatch-manager
    0   libsystem_kernel.dylib          0x00007fff8448c7e6 kevent + 10
    1   libdispatch.dylib               0x00007fff8ffd2786 _dispatch_mgr_invoke + 923
    2   libdispatch.dylib               0x00007fff8ffd1316 _dispatch_mgr_thread + 54

    Thread 2:
    0   libsystem_kernel.dylib          0x00007fff8448c192 __workq_kernreturn + 10
    1   libsystem_c.dylib               0x00007fff868b6594 _pthread_wqthread + 758
    2   libsystem_c.dylib               0x00007fff868b7b85 start_wqthread + 13

    Thread 3:
    0   libsystem_kernel.dylib          0x00007fff8448c192 __workq_kernreturn + 10
    1   libsystem_c.dylib               0x00007fff868b6594 _pthread_wqthread + 758
    2   libsystem_c.dylib               0x00007fff868b7b85 start_wqthread + 13

    Thread 4 Crashed:: Dispatch queue: com.apple.audio.SandboxHelper.xpcq
    0   libsystem_c.dylib               0x00007fff869084f0 strlen + 16
    1   libsystem_c.dylib               0x00007fff868a434b strdup + 18
    2   libxpc.dylib                    0x00007fff906dc803 _xpc_strdup + 50
    3   libxpc.dylib                    0x00007fff906e3bf6 xpc_string_create + 38
    4   libxpc.dylib                    0x00007fff906e70e5 runtime_init + 437
    5   libdispatch.dylib               0x00007fff8ffd43f2 dispatch_once_f + 53
    6   libxpc.dylib                    0x00007fff906df664 _xpc_connection_init + 40
    7   libdispatch.dylib               0x00007fff8ffd22d2 _dispatch_queue_drain + 264
    8   libdispatch.dylib               0x00007fff8ffd212e _dispatch_queue_invoke + 54
    9   libdispatch.dylib               0x00007fff8ffd229c _dispatch_queue_drain + 210
    10  libdispatch.dylib               0x00007fff8ffd212e _dispatch_queue_invoke + 54
    11  libdispatch.dylib               0x00007fff8ffd1928 _dispatch_worker_thread2 + 198
    12  libsystem_c.dylib               0x00007fff868b63da _pthread_wqthread + 316
    13  libsystem_c.dylib               0x00007fff868b7b85 start_wqthread + 13

    Thread 5:
    0   libsystem_kernel.dylib          0x00007fff8448a67a mach_msg_trap + 10
    1   libsystem_kernel.dylib          0x00007fff84489d71 mach_msg + 73
    2   com.apple.CoreFoundation        0x00007fff88d9650c __CFRunLoopServiceMachPort + 188
    3   com.apple.CoreFoundation        0x00007fff88d9ec74 __CFRunLoopRun + 1204
    4   com.apple.CoreFoundation        0x00007fff88d9e486 CFRunLoopRunSpecific + 230
    5   qlmanage                        0x0000000101b85324 0x101b7a000 + 45860
    6   com.apple.Foundation            0x00007fff8eae372a -[NSThread main] + 68
    7   com.apple.Foundation            0x00007fff8eae36a2 __NSThread__main__ + 1575
    8   libsystem_c.dylib               0x00007fff868b48bf _pthread_start + 335
    9   libsystem_c.dylib               0x00007fff868b7b75 thread_start + 13

    Thread 6:
    0   libsystem_kernel.dylib          0x00007fff8448a67a mach_msg_trap + 10
    1   libsystem_kernel.dylib          0x00007fff84489d71 mach_msg + 73
    2   com.apple.QuickLookFramework    0x00007fff88d060d4 QLThumbnailQueueRun + 425
    3   qlmanage                        0x0000000101b88c85 0x101b7a000 + 60549
    4   com.apple.Foundation            0x00007fff8eae372a -[NSThread main] + 68
    5   com.apple.Foundation            0x00007fff8eae36a2 __NSThread__main__ + 1575
    6   libsystem_c.dylib               0x00007fff868b48bf _pthread_start + 335
    7   libsystem_c.dylib               0x00007fff868b7b75 thread_start + 13

    Thread 7:: com.apple.coremedia.mediavalidator
    0   com.apple.CoreFoundation        0x00007fff88d86bd4 CFUniCharGetBitmapPtrForPlane + 20
    1   com.apple.CoreFoundation        0x00007fff88d849fc CFStringCompareWithOptionsAndLocale + 92
    2   com.apple.CoreFoundation        0x00007fff88da60f4 __CFSimpleMergeSort + 420
    3   com.apple.CoreFoundation        0x00007fff88da6083 __CFSimpleMergeSort + 307
    4   com.apple.CoreFoundation        0x00007fff88da5ef6 CFSortIndexes + 1446
    5   com.apple.CoreFoundation        0x00007fff88d78e33 CFQSortArray + 275
    6   com.apple.CoreFoundation        0x00007fff88e4350a _CFArraySortValues + 282
    7   com.apple.CoreFoundation        0x00007fff88d8402b _CFBundleCopySortedDirectoryContentsAtPath + 1227
    8   com.apple.CoreFoundation        0x00007fff88d92b7d _CFBundleTryOnePreferredLprojNameInDirectory + 205
    9   com.apple.CoreFoundation        0x00007fff88d91d69 _CFBundleAddPreferredLprojNamesInDirectory + 1433
    10  com.apple.CoreFoundation        0x00007fff88d9287b _CFBundleGetLanguageSearchList + 123
    11  com.apple.CoreFoundation        0x00007fff88da57bf CFBundleCopyResourceURL + 47
    12  com.apple.CoreFoundation        0x00007fff88dc7085 CFBundleGetLocalInfoDictionary + 53
    13  com.apple.CoreFoundation        0x00007fff88ded8e7 CFBundleGetValueForInfoDictionaryKey + 39
    14  com.apple.audio.toolbox.AudioToolbox    0x00007fff8527aeae AudioComponentPluginLoader::QueryBundle(__CFURL const*, void (*)(void*, AudioComponentDescription const&, __CFString const*, unsigned int, __CFURL const*, __CFBundle*, __CFString const*), void*, __CFArray const**) + 148
    15  com.apple.audio.toolbox.AudioToolbox    0x00007fff8519ba58 AudioComponentPluginLoader::ScanForPluginsInDirectory(char const*) + 450
    16  com.apple.audio.toolbox.AudioToolbox    0x00007fff8519b52c AudioComponentPluginLoader::ScanForPlugins() + 460
    17  com.apple.audio.toolbox.AudioToolbox    0x00007fff8519b32d AudioComponentPluginMgr::CheckRegistration(unsigned int) + 201
    18  com.apple.audio.toolbox.AudioToolbox    0x00007fff8519b138 AudioComponentPluginMgr::FindNext(OpaqueAudioComponent*, AudioComponentDescription const&) + 92
    19  com.apple.audio.toolbox.AudioToolbox    0x00007fff8519aae6 _AT_AudioComponentFindNext + 100
    20  com.apple.audio.toolbox.AudioToolbox    0x00007fff851e7858 AudioFileFormatRegistry::AddComponentFormats() + 104
    21  com.apple.audio.toolbox.AudioToolbox    0x00007fff851e8d64 AudioFileFormatRegistry::GetTypesForExtension(__CFString const*, unsigned int*, void*) + 98
    22  com.apple.audio.toolbox.AudioToolbox    0x00007fff851e93e2 AudioFileGetGlobalInfoSize + 445
    23  com.apple.MediaToolbox          0x00007fff894aa8ae FigAudioFileStreamFormatReaderCreateFromStream + 873
    24  com.apple.MediaToolbox          0x00007fff894aebaa 0x7fff89456000 + 363434
    25  com.apple.MediaToolbox          0x00007fff894aed91 0x7fff89456000 + 363921
    26  com.apple.MediaToolbox          0x00007fff894aefaa FigFormatReaderCreateForStream + 292
    27  com.apple.MediaToolbox          0x00007fff8954de8f 0x7fff89456000 + 1015439
    28  com.apple.MediaToolbox          0x00007fff8954d347 0x7fff89456000 + 1012551
    29  com.apple.CoreMedia             0x00007fff8ce649f2 figThreadMain + 385
    30  libsystem_c.dylib               0x00007fff868b48bf _pthread_start + 335
    31  libsystem_c.dylib               0x00007fff868b7b75 thread_start + 13

    Thread 4 crashed with X86 Thread State (64-bit):
    rax: 0x00000000ffffffff  rbx: 0x0000000000000000  rcx: 0x0000000000000000  rdx: 0x0000000000000000
    rdi: 0x0000000000000000  rsi: 0x0000000000000000  rbp: 0x0000000102023430     rsp: 0x0000000102023418
    r8: 0x0000000000000016   r9: 0x0000000000000736  r10: 0x0000000000000000  r11: 0x00007f9a0b973700
    r12: 0x00000000000000a2  r13: 0x00007fff75393a30  r14: 0x00007f9a0b973700     r15: 0x00000000000000a1
    rip: 0x00007fff869084f0  rfl: 0x0000000000010286  cr2: 0x0000000000000000
   Logical CPU: 1
share|improve this question
    
Ok, after a bit more research, I've managed to determine it's qlmanage for QuickLook that caused the problem. Last time I had issues, I spoke with the developers of MegaSeg, and they said that my crashes were also related to QuickLook, then. So, next question: if QuickLook is what keeps giving me a problem, is there a way to disable it? –  Blackwell Feb 15 at 3:29
    
May be you have some media files that let QuickLook crash (perhaps a movie with a "bad header"). General tip: Press CMD-J in Finder and play around with the options here. I believe that affects the way QuickLook operates. –  user66064 Feb 15 at 4:38
    
I've messed around with just about everything I can find on qlmanage, including doing a -r and a -r cache. I've had the computer running in the back office (running music on a backup computer for the night), and it has been running for about 4 hours now, no hard crashes. However, when I checked the crash log, there was a new entry for about an hour ago. Almost exact replica of previous crash. And I did mess around with the Finder CMD-J stuff, as well. Frustrating issue. –  Blackwell Feb 15 at 6:51

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