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Another iOS SDK 12 error

Attempting to build a project that built fine a few weeks ago. It has had changes since then but I can’t point to anything that was done since then as the culprit.


2018-09-24 23:49:49.212 ibtoold[5756:186810] +[SimServiceContext serviceContextForDeveloperDir:error:]: unrecognized selector sent to class 0x11758cc00
2018-09-24 23:49:49.214 ibtoold[5756:186810] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[SimServiceContext serviceContextForDeveloperDir:error:]: unrecognized selector sent to class 0x11758cc00'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fff4183e2db __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x00007fff689e5c76 objc_exception_throw + 48
    2   CoreFoundation                      0x00007fff418d6cf4 +[NSObject(NSObject) doesNotRecognizeSelector:] + 132
    3   CoreFoundation                      0x00007fff417b4820 ___forwarding___ + 1456
    4   CoreFoundation                      0x00007fff417b41e8 _CF_forwarding_prep_0 + 120
    5   IDEInterfaceBuilderCocoaTouchIntegration 0x00000001172292dc __IBSharedInterfaceBuilderSpecificSimulatorServiceContext_block_invoke_2 + 162
    6   IDEInterfaceBuilderCocoaTouchIntegration 0x000000011722920e __IBSharedInterfaceBuilderSpecificSimulatorServiceContext_block_invoke + 28
    7   libdispatch.dylib                   0x00007fff695c5db8 _dispatch_client_callout + 8
    8   libdispatch.dylib                   0x00007fff695c5d6b dispatch_once_f + 41
    9   IDEInterfaceBuilderCocoaTouchIntegration 0x00000001172291ad IBSharedInterfaceBuilderSpecificSimulatorServiceContext + 1165
    10  IDEInterfaceBuilderCocoaTouchIntegration 0x000000011710703e -[IBCocoaTouchIdiom trySimDeviceTypeForIdentifier:error:] + 56
    11  IDEInterfaceBuilderCocoaTouchIntegration 0x00000001171071f9 -[IBCocoaTouchIdiom simDeviceTypeForToolDescription:error:] + 153
    12  IDEInterfaceBuilderCocoaTouchIntegration 0x00000001171c0ea4 -[IBCocoaTouchPlatformToolDescription preferredDeviceTypeReturningError:] + 114
    13  IDEInterfaceBuilderCocoaTouchIntegration 0x00000001170ca055 __130+[IBICAbstractCocoaTouchPlatformAdapter catalogToolForPlatformWithIdentifier:andAdditionalLaunchEnvironmentVariables:launchError:]_block_invoke_2 + 377
    14  IBFoundation                        0x0000000108debb9c -[NSMutableDictionary(IBMutableDictionaryAdditions) ib_objectForKey:creatingIfNecessaryWithBlock:] + 100
    15  IDEInterfaceBuilderCocoaTouchIntegration 0x00000001170c9bd9 +[IBICAbstractCocoaTouchPlatformAdapter catalogToolForPlatformWithIdentifier:andAdditionalLaunchEnvironmentVariables:launchError:] + 202
    16  IDEInterfaceBuilderCocoaTouchIntegration 0x00000001170c7901 -[IBICAbstractCocoaTouchPlatformAdapter compileCARItems:tagSolutionSpace:options:queue:completionHandler:] + 371
    17  IDEInterfaceBuilderKit              0x0000000107bf9bad __84-[IBICAbstractPlatformAdapter compileSelectedItems:options:queue:completionHandler:]_block_invoke + 228
    18  IDEInterfaceBuilderKit              0x0000000107bfcfb4 __93-[IBICAbstractPlatformAdapter compileStandaloneCatalogItems:options:queue:completionHandler:]_block_invoke + 18
    19  DVTFoundation                       0x000000010871b45e __DVTDispatchAsync_block_invoke + 97
    20  libdispatch.dylib                   0x00007fff695cd5fa _dispatch_call_block_and_release + 12
    21  libdispatch.dylib                   0x00007fff695c5db8 _dispatch_client_callout + 8
    22  libdispatch.dylib                   0x00007fff695d1395 _dispatch_main_queue_callback_4CF + 1148
    23  CoreFoundation                      0x00007fff417f6c19 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
    24  CoreFoundation                      0x00007fff417b8dfa __CFRunLoopRun + 2586
    25  CoreFoundation                      0x00007fff417b8153 CFRunLoopRunSpecific + 483
    26  DVTFoundation                       0x00000001085a0d3e -[NSRunLoop(DVTNSRunLoopAdditions) dvt_spinRunLoopInMode:whileBlockExecutesConcurrently:] + 457
    27  DVTFoundation                       0x00000001085a11e9 -[NSRunLoop(DVTNSRunLoopAdditions) dvt_spinRunLoopInMode:waitingForSemaphore:] + 128
    28  ibtoold                             0x0000000107971850 -[IBCLIImageCatalogToolPersona compileCatalogCollection:withPlatformAdapter:arguments:outputDictionary:] + 1622
    29  ibtoold                             0x0000000107973087 -[IBCLIImageCatalogToolPersona invokeArguments:outputDictionary:] + 1785
    30  ibtoold                             0x0000000107973631 -[IBCLIImageCatalogToolPersona runSingleInvocation:outputtingToFileHandle:andVerifyingEnvironment:] + 709
    31  ibtoold                             0x00000001079810e7 IBCLIServerRunSingleInvocation + 520
    32  ibtoold                             0x000000010798173e __IBCLIServerRunSingleInvocationWithIODirectedAtPipesAndUnlinkOnSuccess_block_invoke_2 + 34
    33  ibtoold                             0x000000010798160c __IBCLIServerRunSingleInvocationWithIODirectedAtPipesAndUnlinkOnSuccess_block_invoke + 857
    34  ibtoold                             0x00000001079703f5 -[IBCLIErrorForwarder forwardErrorOutputToDescriptor:whileInvokingBlock:] + 110
    35  ibtoold                             0x0000000107980c9d IBCLIServerRunSingleInvocationWithIODirectedAtPipesAndUnlinkOnSuccess + 581
    36  ibtoold                             0x000000010797fa7d main + 2673
    37  libdyld.dylib                       0x00007fff695ff015 start + 1
    38  ???                                 0x0000000000000002 0x0 + 2
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Total build time: 56.07 seconds (Local executor: 34.76 seconds)


This looks like under-the-hood stuff to me. Is anyone able to decipher it?

I’m running 4.19. Is it time to update?

I’m having this exact same problem right now after accidentally updating our target device to IOS12. Worked fine with no error on IOS11, so I think you’re right that it’s under-the-hood stuff.

This issue ended up being an Xcode problem. Once Xcode had updated and the engine was restarted, everything worked fine again.