User profile for user: raffjones
raffjones Author
User level: Level 1
14 points

How do I identify the unstable Audio Unit plugin in Logic Pro after upgrading to 11.2?

This is the most stupid thing I can think of. Getting a warning that a plugin is unstable but NO CLUE as to which one it is. I have literally hundreds and since the app upgraded itself to 11.2 I cannot open a final mix which needs a tweak. A blocker on a professional project.


Whatsmore, Reset and Rescan selection is doing nothing, and neither is "Full AudioUnit Reset". I quit and restart Logic and it does not rescan anything. I have rebooted the computer, and tried deleting the AudioUnit cache but nothing is working.


If anyone knows how I can find the offending plugin in some log, I'd be grateful.


And PLEASE PLEASE PLEASE Apple can you make this crazy unhelpful error something that can guide a user to a fix without having to manually disable all plugins and re-enable one by one until they find the offender. It's awful UX.


[Re-Titled by Moderator]

MacBook Pro 16″, macOS 15.5

Posted on Jun 2, 2025 2:24 PM

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5 replies
User profile for user: EddieGrey
EddieGrey
User level: Level 4
1,505 points

Jun 2, 2025 2:50 PM in response to raffjones

This is a user forum. Please provide feedback to Apple:


Submit Feedback to Apple:

Report your issues to Apple. Fixes may not be implemented until they are reported. These forums are user-to-user platforms, and Apple’s involvement is limited to their own schedule. While Apple may not respond directly, the more feedback received, the better understanding they gain of existing issues and potential updates for future versions. Without reporting your concerns, Apple will not be aware of them.


  1. Go Here: Feedback - Logic Pro - Apple
  2. Feedback Type: “Broken feature/Report a problem”
  3. Comment: Please provide a detailed description of the issue you encountered and the troubleshooting steps you have attempted thus far. Include the URL of this thread for reference.


Can you provide the Crash Report/Log?


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User profile for user: EddieGrey
EddieGrey
User level: Level 4
1,505 points

Jun 2, 2025 5:33 PM in response to raffjones

Are you using Acustica Audio plug-ins? That should be causing the issue.

Try and update those via their hub. Worst case, you can simply just remove their plugs from your session and keep working from there. I highly recommend you create a Project Alternative before making any changes to the current session. Alternatively, you might even consider saving a copy of the session just in case this current version is somehow corrupt. Take it slow and make sure you back-up as you progress ahead.


Hope this helps,

Eddie G.

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User profile for user: raffjones
raffjones Author
User level: Level 1
14 points

Jun 2, 2025 3:28 PM in response to EddieGrey

Thanks EddieGrey. I have sent the feedback to Apple.


The summary of the crash log is below (truncated as it exceeds the character limit), with the full transcript here.


Process:               AUHostingServiceXPC_arrow [9478]
Path:                  /System/Library/Frameworks/AudioToolbox.framework/XPCServices/AUHostingServiceXPC_arrow.xpc/Contents/MacOS/AUHostingServiceXPC_arrow
Identifier:            com.apple.audio.AUHostingService.arm64e
Version:               1.0 (1)
Build Info:            CoreAudioServices_AUHostingServiceXPC_arrow-1456607000000000~12
Code Type:             ARM-64 (Native)
Parent Process:        launchd [1]
Responsible:           Logic Pro [9473]
User ID:               501

Date/Time:             2025-06-02 23:16:45.3564 +0100
OS Version:            macOS 15.5 (24F74)
Report Version:        12
Anonymous UUID:        C03B2B30-01EE-4AD7-97A6-2E5FB56473EA

Sleep/Wake UUID:       CA7A8B54-11EA-4D7D-88CC-CD785984A3F1

Time Awake Since Boot: 3800 seconds
Time Since Wake:       1120 seconds

System Integrity Protection: enabled

Crashed Thread:        132

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000068
Exception Codes:       0x0000000000000001, 0x0000000000000068

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [9478]

VM Region Info: 0x68 is not in any region.  Bytes before following region: 4302569368
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      __TEXT                      100740000-100754000    [   80K] r-x/r-x SM=COW  /System/Library/Frameworks/AudioToolbox.framework/XPCServices/AUHostingServiceXPC_arrow.xpc/Contents/MacOS/AUHostingServiceXPC_arrow

Thread 0::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	       0x199b143cc __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x199b530e0 _pthread_cond_wait + 984
2   AcquaC3Vstgui410x64_arm       	       0x34f8e6aac CoreTevn::WaitFor(int) + 76
3   AcquaC3Vstgui410x64_arm       	       0x34f9727b8 CoreSmph::locks() + 176
4   AcquaC3Vstgui410x64_arm       	       0x34f997450 CoreTprc::syncw() + 32
5   AcquaC3Vstgui410x64_arm       	       0x34f80bff0 CoreDsp_::setc2(void*, long, CoreXml_*, int, int, int, int, bool) + 2224
6   AcquaC3Vstgui410x64_arm       	       0x34f9990dc CoreDdsp::setck(void*, long, bool, bool) + 300
7   AcquaC3Vstgui410x64_arm       	       0x34f9893f0 CoreChmg::setck(void*, int) + 496
8   AcquaC3Vstgui410x64_arm       	       0x34fac6a1c CoreNblg::setChunk(void*, int, bool) + 200
9   AcquaC3Vstgui410x64_arm       	       0x34f86f7bc AudioEffect::dispatcher(int, int, long long, void*, float) + 300
10  AcquaC3Vstgui410x64_arm       	       0x34f86f4e8 AudioEffect::dispatchEffectClass(AEffect*, int, int, long long, void*, float) + 36
11  NUW x64                       	       0x34a825a00 juce::VSTPluginInstance::dispatch(int, int, long long, void*, float) const + 160
12  NUW x64                       	       0x34a826910 juce::VSTPluginInstance::loadFromFXBFile(void const*, unsigned long) + 716
13  NUW x64                       	       0x34a819828 NuwAudioProcessor::setStateInformation(void const*, int) + 48
14  NUW x64                       	       0x34a806c28 JuceAU::RestoreState(void const*) + 252
15  NUW x64                       	       0x34a803580 AUMethodSetProperty(void*, unsigned int, unsigned int, unsigned int, void const*, unsigned int) + 128
16  AudioToolboxCore              	       0x19c5539a0 AudioUnitSetProperty + 560
17  AudioToolboxCore              	       0x19c48f360 std::__1::__function::__func<setStateAndNotify(__CFDictionary const*, AUAudioUnitV2Bridge*, unsigned int)::$_0, std::__1::allocator<setStateAndNotify(__CFDictionary const*, AUAudioUnitV2Bridge*, unsigned int)::$_0>, void ()>::operator()() + 60
18  AudioToolboxCore              	       0x19c48f200 void applesauce::dispatch::v1::async<dispatch_to_main_queue_with_timeout(std::__1::function<void ()>)::$_0>(NSObject<OS_dispatch_queue>*, dispatch_to_main_queue_with_timeout(std::__1::function<void ()>)::$_0&&)::'lambda'(void*)::__invoke(void*) + 124
19  libdispatch.dylib             	       0x1999b485c _dispatch_client_callout + 16
20  libdispatch.dylib             	       0x1999d1b58 _dispatch_main_queue_drain.cold.5 + 812
21  libdispatch.dylib             	       0x1999a9db0 _dispatch_main_queue_drain + 180
22  libdispatch.dylib             	       0x1999a9cec _dispatch_main_queue_callback_4CF + 44
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How do I identify the unstable Audio Unit plugin in Logic Pro after upgrading to 11.2?

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