# Crash on Record Start on Mac mini Unity 2018.2.20

**URL:** <https://qa.fmod.com/t/crash-on-record-start-on-mac-mini-unity-2018-2-20/14270>\
**Category:** Unity\
**Created:** [December 20, 2018, 5:56pm UTC](https://qa.fmod.com/t/crash-on-record-start-on-mac-mini-unity-2018-2-20/14270 "2018-12-20T17:56:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![PaperEdge](https://avatars.discourse-cdn.com/v4/letter/p/34f0e0/32.png) [@PaperEdge](https://qa.fmod.com/u/PaperEdge)\
**Post date:** [December 20, 2018, 5:56pm UTC](https://qa.fmod.com/t/crash-on-record-start-on-mac-mini-unity-2018-2-20/14270/1 "2018-12-20T17:56:27Z")

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My Unity crashes whenever I try to use RecordStart() on my Mac mini. It works just fine on my Windows Machine though. I have the latest Integration package and am using it alongside the AudioStream Asset which uses FMOD. I attached the crash log to hopefully gleam some answers. The previous functions like createSound work with no errors

> [ERR] OutputCoreAudio::recordStart : AudioUnitSetProperty for kAudioOutputUnitProperty\_CurrentDevice returned -10851.  
> Receiving unhandled NULL exception  
> Obtained 41 stack frames.  
> #0 0x00000145cf7342 in FMOD::getGlobals(FMOD::Global\*\*)  
> #1 0x00000145cf4bed in FMOD::getGlobals(FMOD::Global\*\*)  
> #2 0x00000145cf245d in FMOD::getGlobals(FMOD::Global\*\*)  
> #3 0x00000145d153e5 in FMOD::SystemI::createClientProfile()  
> #4 0x00000145d0c794 in FMOD::System::recordStart(int, FMOD::Sound\*, bool)  
> #5 0x0000013c625b79 in (wrapper managed-to-native) FMOD.System:FMOD5\_System\_RecordStart (intptr,int,intptr,bool) + 0x139 (0x13c625a40 0x13c625bc4) [0x139748660 - Unity Child Domain]  
> #6 0x0000013c6259f0 in FMOD.System:recordStart (int,FMOD.Sound,bool) + 0xa0 (0x13c625950 0x13c625a30) [0x139748660 - Unity Child Domain]  
> #7 0x0000013c623390 in AudioStream.AudioStreamInputBase/c\_\_Iterator1:MoveNext () + 0x1e30 (0x13c621560 0x13c623d54) [0x139748660 - Unity Child Domain]  
> #8 0x0000013b19f97c in UnityEngine.SetupCoroutine:InvokeMoveNext (System.Collections.IEnumerator,intptr) + 0x18c (0x13b19f7f0 0x13b19f9aa) [0x139748660 - Unity Child Domain]  
> #9 0x0000013b19fac3 in (wrapper runtime-invoke) :runtime\_invoke\_void\_object\_intptr (object,intptr,intptr,intptr) + 0x113 (0x13b19f9b0 0x13b19fbf6) [0x139748660 - Unity Child Domain]  
> #10 0x00000139a09d3a in mono\_get\_runtime\_build\_info  
> #11 0x00000139b36946 in mono\_runtime\_invoke  
> #12 0x00000101036e4a in ScriptingInvocation::Invoke(ScriptingExceptionPtr\*, bool)  
> #13 0x00000100fe0b4f in Coroutine::InvokeMoveNext(ScriptingExceptionPtr\*)  
> #14 0x00000100fe02a3 in Coroutine::Run(bool\*)  
> #15 0x00000100fe0184 in Coroutine::ContinueCoroutine(Object\*, void\*)  
> #16 0x000001009d31dd in DelayedCallManager::Update(int)  
> #17 0x00000100c7b376 in InitPlayerLoopCallbacks()::UpdateScriptRunDelayedDynamicFrameRateRegistrator::Forward()  
> #18 0x00000100c7c63e in ExecutePlayerLoop(NativePlayerLoopSystem\*)  
> #19 0x00000100c7c69c in ExecutePlayerLoop(NativePlayerLoopSystem\*)  
> #20 0x00000100c7c84b in PlayerLoop()  
> #21 0x00000101a535f4 in PlayerLoopController::UpdateScene(bool)  
> #22 0x00000101a4e559 in PlayerLoopController::UpdateSceneIfNeeded()  
> #23 0x00000101a4c18e in Application::TickTimer()  
> #24 0x000001006c4ece in -[EditorApplication TickTimer]  
> #25 0x007fff52cdd646 in \_\_NSFireTimer  
> #26 0x007fff5094cedd in **CFRUNLOOP\_IS\_CALLING\_OUT\_TO\_A\_TIMER\_CALLBACK\_FUNCTION**  
> #27 0x007fff5094ca90 in \_\_CFRunLoopDoTimer  
> #28 0x007fff5094c5d0 in \_\_CFRunLoopDoTimers  
> #29 0x007fff5092d81b in \_\_CFRunLoopRun  
> #30 0x007fff5092cd48 in CFRunLoopRunSpecific  
> #31 0x007fff4fbc3ab5 in RunCurrentEventLoopInMode  
> #32 0x007fff4fbc37eb in ReceiveNextEventCommon  
> #33 0x007fff4fbc3568 in \_BlockUntilNextEventMatchingListInModeWithFilter  
> #34 0x007fff4de7e363 in \_DPSNextEvent  
> #35 0x007fff4de7d102 in -[NSApplication(NSEvent) \_nextEventMatchingEventMask:untilDate:inMode:dequeue:]  
> #36 0x007fff4de77165 in -[NSApplication run]  
> #37 0x007fff4de668a3 in NSApplicationMain  
> #38 0x000001006e38e7 in EditorMain(int, char const\*\*)  
> #39 0x000001006e3d69 in main  
> #40 0x007fff7db6aed9 in start

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<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [December 21, 2018, 1:53am UTC](https://qa.fmod.com/t/crash-on-record-start-on-mac-mini-unity-2018-2-20/14270/2 "2018-12-21T01:53:19Z")

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That error means that something has changed with the record driver, eg. it has been removed, between the getRecordDriver and recordStart API calls.