“Fatal Error Occured” with MacOS 15.4 Developer Beta 1

[nicholfd]

You mentioned you "test Apple betas"... What do you test them for? Just curious.

MDM/Endpoint management

[ds1972]

You mentioned you "test Apple betas"... What do you test them for? Just curious.

MDM/Endpoint management

Very cool! Always interesting stuff to work with.

[LemonMeringueTy]

Same issue here, shame that it's such a hassle to downgrade back to 15.3.

Just in general, to everyone in this thread - Betas of any software should only be used for testing. If the system/software/usage is important then it probably shouldn't have a beta OS or beta software on it.

Apple Time Machine is built-in to macOS & free as long as you have suitable external storage available. With Time Machine it's relatively painless to make a system backup before testing any beta software and easy to restore if there are any issues.

In my case, I have many different systems and only install betas on systems that are not so important & where I have other systems that I can use if the betas do not work out. I reported my testing just so the community & developer could be aware of the issue (maybe other's would notice & avoid the beta OS). I have no expectations that it will be fixed or resolved during the beta OS period.

If the issue is resolved during the OS beta period (by either Apple or MakeMKV developers), I will definitely update this thread & ask that it be marked resolved.

I have time machine backups, but it wants me to completely reinstall 15.3 then use migration assistant to import my data. Not worth IMO I'll just wait for a fix, haha.

[LemonMeringueTy]

Apple Intelligence

Known Issues

After restoring macOS 15.4, some Apple Intelligence features might not be available or you might see "Downloading support…". (145297891)

Workaround: Restarting your device might resolve the issue.

FSKit

New Features

FSKit is now available, enabling delivery of user space file systems as Application Extensions. These file systems support integration with DiskArbitration. (44900760)

Game Controller

Resolved Issues

Fixed: Game controllers might stop responding when accessibility features, such as Voice Over, are enabled. (141497799)

libxml2

Deprecations

The custom allocation API for libxml2 is deprecated starting in macOS Sequoia 15.4, iOS 18.4, tvOS 18.4, visionOS 2.4, and tvOS 18.4. If this API is not used, no changes are required. If this API is currently used, make changes to call malloc() instead of xmlMalloc() or xmlMallocAtomic(); call realloc() instead of xmlRealloc(); call free() instead of xmlFree() and call strdup() instead of xmlMemStrdup(). Stop calling xmlMemSetup(), xmlMemGet(), xmlGcMemSetup() and xmlGcMemGet() to set custom allocation functions. Do not set global variables xmlMalloc, xmlMallocAtomic, xmlRealloc, xmlFree, and xmlMemStrdup. Internally, libxml2 and libxslt will now use the system allocator instead of this API, so do not rely on these libraries using the custom allocation API. (138404994)

Podcasts

New Features

Podcasts Search provides suggestions as you type to help you find what you're looking for. (144169175)

SCSIControllerDriverKit

New Features

Four new API's have been introduced: UserMapBundledParallelTaskCommandAndResponseBuffers, BundledParallelTaskCompletion, UserProcessBundledParallelTasks and UserCompleteBundledParallelTask.

These APIs introduce the concepts of bundled I/Os and shared memory, for parallel task command and response buffers.

The shared memory addresses the RPC copy overhead. Bundled I/O enables the exchange of multiple I/Os in a single API call (in both submission and completion path), instead of handing over one I/O at a time between DriverKit and DriverExtension. This helps mitigate the DriverKit latencies while interacting with DriverExtension.

The IOUserSCSIParallelInterfaceController.iig file explains the concepts of I/O bundling and shared memory for parallel task and response buffers.

If DriverExtension has considerably lower I/O performance compared to the KernelExtension for workloads with high queue depths or very small I/O sizes (i.e. 4KB), try using these new APIs. (134516478)

StoreKit

New Features

New StoreKit APIs support Advanced Commerce API in-app purchases. (118528943)

By using the new purchase option API introductoryOfferEligibility(compactJWS:), you can now set a preference for whether an introductory offer should be redeemed during a purchase. This API requires you to sign a payload on your server in order to either apply the offer (even if the customer is not eligible) or block it. (136152740)

New properties appTransactionID, originalPlatform, and period are now available in AppTransaction , Transaction , Transaction.Offer , and Product.SubscriptionInfo.RenewalInfo . (136395697)


Deprecations

Transaction.currentEntitlement(for:) is now deprecated. This API returns the latest transaction that entitles the user to a product, which may not include transactions originated for family shared subscriptions. Use the Transaction.currentEntitlements(for:) method to get all the transactions that entitle the user to a product. (138320205)

SwiftUI

Resolved Issues

Fixed: A color set by the tint(_:) modifier does not override the tint color of buttons in that view's confirmation dialogs and alerts. (138774306)

Fixed: For apps compiled against iOS 18.4 beta, applying defaultVisibility(.hidden) to customizable toolbar items does not hide the item by default on iOS. (139815290)

Fixed: When NavigationStack or NavigationSplitView content updates, the environment is not invalidated unless properties in the environment have changed. (139855826)


Known Issues

On macOS, .sheet, .alert and .confirmationDialog modals conditionally allow app termination (via the menu item, ⌘Q, Software Update, etc.) in some configurations. (141551605)

Workaround: For macOS 15.4 beta, modals listed above will allow app quit while presented under specific conditions. If you strictly need to block app quit in macOS 15.4 beta, you can temporarily mark the dialog as critical with dialogSeverity, ensure the sheet toolbar has > 1 button (or no buttons with .confirmationAction or cancellationAction placements), or ensure the dialog has > 1 action button in it.

System Calls

New Features

fileport_makeport(2) and fileport_makefd(2) are now APIs with manual pages. (66571768) (FB8270900)

UIWritingToolsCoordinator

Known Issues

In macOS 15.4 beta, NSWritingToolsCoordinatorDelegate method -writingToolsCoordinator:requestsRangeInContextWithIdentifierForPoint:completion: is marked as optional and will not be called. (142681236)

Workaround: When building on macOS 15.4 beta and deploying to macOS 15.2, implement the deprecated NSWritingToolsCoordinatorDelegate method -writingToolsCoordinator:requestsRangeInContextWithIdentifierForPoint:completion:. If you are not deploying earlier than macOS 15.4, do not implement this method.

URLSession

New Features

To enable the new HTTP loading mode, set usesClassicLoadingMode to false on URLSessionConfiguration. The new loading mode will become the default in a future release. (89390075)

Writing Tools

Known Issues

After generating a list, key point, table, or summary in the pop-over, selecting "Replace" results in an error message. (145186545)

Workaround: The generated content can be copied and pasted. User can manually replace the selected text with the generated text.

Here are the release notes for 15.4 if that helps in diagnosing the issue any.

[ds1972]

Apple Intelligence

Known Issues

[...snip...]

Workaround: The generated content can be copied and pasted. User can manually replace the selected text with the generated text.

Here are the release notes for 15.4 if that helps in diagnosing the issue any.

Thanks for posting this... Very thoughtful. Sadly, a lot of Apple's release notes tend to be a "here's SOME of the stuff POs remembered to add to the release notes". We've gotten bitten a few time at work by Apple "forgetting" to point something out that they changed.

Unfortunately, this will require either the dev team or Apple to make a change to correct it.

Like you said earlier, the rollback process is (unnecessarily?) onerous, so I'm just gonna wait.

[LemonMeringueTy]

Thanks for posting this... Very thoughtful. Sadly, a lot of Apple's release notes tend to be a "here's SOME of the stuff POs remembered to add to the release notes". We've gotten bitten a few time at work by Apple "forgetting" to point something out that they changed.

Unfortunately, this will require either the dev team or Apple to make a change to correct it.

Like you said earlier, the rollback process is (unnecessarily?) onerous, so I'm just gonna wait.

You seem to have a lot of experience in regards to beta testing with Apple, so I'll ask you.

Do you think sending beta feedback about the issue to Apple will help?

Or because of the grey area of the application, they won't even bother?

[ds1972]

Do you think sending beta feedback about the issue to Apple will help?

Or because of the grey area of the application, they won't even bother?

The issue is really that we don't have any real detail about the issue. The developers would have to identify the source of the problem (i.e., where the code is failing) in order to file a Feedback Assistant case. Otherwise it'll just get ignored (even with details, it's hard to get a case prioritized/addressed).

Apple dev doesn't care about the nature of the application, just the functionality of the code/APIs/frameworks.

[LemonMeringueTy]

Do you think sending beta feedback about the issue to Apple will help?

Or because of the grey area of the application, they won't even bother?

The issue is really that we don't have any real detail about the issue. The developers would have to identify the source of the problem (i.e., where the code is failing) in order to file a Feedback Assistant case. Otherwise it'll just get ignored (even with details, it's hard to get a case prioritized/addressed).

Apple dev doesn't care about the nature of the application, just the functionality of the code/APIs/frameworks.

Good to know, thank you very much!

[NESSNES404]

System Software Overview:

System Version: macOS 15.4 (24E5206s)
Kernel Version: Darwin 24.4.0

Screen Shot 2025-02-28 at 10.19.35 AM.png (380.85 KiB) Viewed 1419 times

Screen Shot 2025-02-28 at 10.19.39 AM.png (368.46 KiB) Viewed 1419 times

Screen Shot 2025-02-28 at 10.19.47 AM.png (225.04 KiB) Viewed 1419 times

[DocT1973]

I’m not sure if I’m glad to see it isn’t just me or not.

I completely agree with not installing betas on your primary device. I installed it on my test system exactly to try to find these problems.

I reported it here and to Apple through their Feedback app on the day of the original post in case either party wanted to look into it. So far, nothing from Apple.

I have been using a paid version of Makena for years and love the software. Here’s hoping a new beta or the developer can fix this.

Thanks, all!

[NESSNES404]

The crash in makemkvcon is due to an invalid memory access at address 0x8, likely from a null pointer dereference or memory corruption in Thread 4.

Code: Select all

-------------------------------------
Translated Report (Full Report Below)
-------------------------------------

Process:               makemkvcon [4679]
Path:                  /Applications/MakeMKV.app/Contents/MacOS/makemkvcon
Identifier:            makemkvcon
Version:               ???
Code Type:             ARM-64 (Native)
Parent Process:        makemkv [4678]
Responsible:           makemkv [4678]
User ID:               501

Date/Time:             2025-03-03 18:36:58.8006 -0500
OS Version:            macOS 15.4 (24E5222f)
Report Version:        12
Anonymous UUID:        9EDCF247-5629-917E-0DDB-4FCCD45D555B

Sleep/Wake UUID:       0F42A85E-1959-4A31-B468-2E5C4556483E

Time Awake Since Boot: 5600 seconds
Time Since Wake:       5277 seconds

System Integrity Protection: enabled

Crashed Thread:        4

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000008
Exception Codes:       0x0000000000000001, 0x0000000000000008

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [4679]

VM Region Info: 0x8 is not in any region.  Bytes before following region: 4373135352
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      __TEXT                      104a8c000-104f18000    [ 4656K] r-x/r-x SM=COW  /Applications/MakeMKV.app/Contents/MacOS/makemkvcon

Thread 0::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	       0x193de99b8 __ulock_wait + 8
1   libsystem_pthread.dylib       	       0x193e2c0a8 _pthread_join + 608
2   makemkvcon                    	       0x104d82950 0x104a8c000 + 3107152
3   makemkvcon                    	       0x104a8f558 0x104a8c000 + 13656
4   dyld                          	       0x193a8ab4c start + 6000

Thread 1:
0   libsystem_kernel.dylib        	       0x193de7bb0 semaphore_wait_trap + 8
1   makemkvcon                    	       0x104c41544 0x104a8c000 + 1791300
2   makemkvcon                    	       0x104c44830 0x104a8c000 + 1804336
3   libsystem_pthread.dylib       	       0x193e29c0c _pthread_start + 136
4   libsystem_pthread.dylib       	       0x193e24b80 thread_start + 8

Thread 2:
0   libsystem_pthread.dylib       	       0x193e24b6c start_wqthread + 0

Thread 3:
0   libsystem_pthread.dylib       	       0x193e24b6c start_wqthread + 0

Thread 4 Crashed:
0   makemkvcon                    	       0x104d7f718 0x104a8c000 + 3094296
1   makemkvcon                    	       0x104beba54 0x104a8c000 + 1440340
2   makemkvcon                    	       0x104a977c0 0x104a8c000 + 47040
3   makemkvcon                    	       0x104a97538 0x104a8c000 + 46392
4   makemkvcon                    	       0x104a973c8 0x104a8c000 + 46024
5   makemkvcon                    	       0x104d814e0 0x104a8c000 + 3101920
6   makemkvcon                    	       0x104d7be14 0x104a8c000 + 3079700
7   makemkvcon                    	       0x104d68318 0x104a8c000 + 2999064
8   makemkvcon                    	       0x104d6c5dc 0x104a8c000 + 3016156
9   makemkvcon                    	       0x104d83a7c 0x104a8c000 + 3111548
10  makemkvcon                    	       0x104d82d54 0x104a8c000 + 3108180
11  makemkvcon                    	       0x104d82bb0 0x104a8c000 + 3107760
12  libsystem_pthread.dylib       	       0x193e29c0c _pthread_start + 136
13  libsystem_pthread.dylib       	       0x193e24b80 thread_start + 8

Thread 5:
0   libsystem_kernel.dylib        	       0x193de87dc read + 8
1   makemkvcon                    	       0x104d84a18 0x104a8c000 + 3115544
2   makemkvcon                    	       0x104d83360 0x104a8c000 + 3109728
3   libsystem_pthread.dylib       	       0x193e29c0c _pthread_start + 136
4   libsystem_pthread.dylib       	       0x193e24b80 thread_start + 8


Thread 4 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000000000000000   x2: 0x00000000e4c15c00   x3: 0x00000000e4c15c09
    x4: 0x00000000e4c15c12   x5: 0x00000000986773b1   x6: 0x00000000e1032cee   x7: 0x00000000986717dd
    x8: 0x0000000000000008   x9: 0x0000000000000000  x10: 0xd97bfab5563400c5  x11: 0x0000000000000008
   x12: 0x0000000000000000  x13: 0x000000000000000e  x14: 0x0000000000000000  x15: 0x0000000193e30810
   x16: 0x0000000000000b40  x17: 0x0000000000000001  x18: 0x0000000000000000  x19: 0x00000001051b8000
   x20: 0x0000000000000000  x21: 0x000000005f85dff7  x22: 0x00000000a1682538  x23: 0x0000000104e50990
   x24: 0x0000000000000045  x25: 0x0000000074940ce4  x26: 0x0000000000000001  x27: 0x00000000000493df
   x28: 0x0000000104e505d0   fp: 0x000000016b59e990   lr: 0x0000000104d7f6ec
    sp: 0x000000016b59e960   pc: 0x0000000104d7f718 cpsr: 0x80001000
   far: 0x0000000000000008  esr: 0x92000006 (Data Abort) byte read Translation fault

Binary Images:
       0x104a8c000 -        0x104f17fff makemkvcon (*) <00000000-0000-0000-0000-000000000000> /Applications/MakeMKV.app/Contents/MacOS/makemkvcon
       0x105058000 -        0x105077fff libmakemkv.dylib (*) <00000000-0000-0000-0000-000000000000> /Applications/MakeMKV.app/Contents/MacOS/libmakemkv.dylib
       0x104ff0000 -        0x104ff3fff libdriveio.dylib (*) <00000000-0000-0000-0000-000000000000> /Applications/MakeMKV.app/Contents/MacOS/libdriveio.dylib
       0x105928000 -        0x105adffff libffm.dylib (*) <00000000-0000-0000-0000-000000000000> /Applications/MakeMKV.app/Contents/MacOS/libffm.dylib
       0x193de7000 -        0x193e2231b libsystem_kernel.dylib (*) <80d43abc-d21e-3742-b275-494c560bcbe0> /usr/lib/system/libsystem_kernel.dylib
       0x193e23000 -        0x193e2fa47 libsystem_pthread.dylib (*) <d006fbde-80f8-3460-b710-6587e6df2d5c> /usr/lib/system/libsystem_pthread.dylib
       0x193a84000 -        0x193b1e9ff dyld (*) <0e3b6830-1295-39a1-85aa-39385e0ab282> /usr/lib/dyld
               0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???
       0x193e30000 -        0x193e5fb13 libdyld.dylib (*) <62e76e80-1646-3684-814b-c73146bf47d4> /usr/lib/system/libdyld.dylib

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=853.2M resident=0K(0%) swapped_out_or_unallocated=853.2M(100%)
Writable regions: Total=952.3M written=353K(0%) resident=353K(0%) swapped_out=0K(0%) unallocated=951.9M(100%)

                                VIRTUAL   REGION 
REGION TYPE                        SIZE    COUNT (non-coalesced) 
===========                     =======  ======= 
Activity Tracing                   256K        1 
Kernel Alloc Once                   32K        1 
MALLOC                           923.2M       18 
MALLOC guard page                   96K        6 
STACK GUARD                       56.1M        6 
Stack                             10.6M        6 
VM_ALLOCATE                        912K        1 
__AUTH                             822K      161 
__AUTH_CONST                      13.0M      295 
__DATA                            20.1M      281 
__DATA_CONST                      11.4M      299 
__DATA_DIRTY                       452K       88 
__FONT_DATA                        2352        1 
__LINKEDIT                       619.3M        5 
__OBJC_RO                         61.3M        1 
__OBJC_RW                         2391K        1 
__TEXT                           233.9M      308 
__TPRO_CONST                       128K        2 
mapped file                       32.5M        2 
page table in kernel               353K        1 
shared memory                      192K        6 
===========                     =======  ======= 
TOTAL                              1.9G     1490 



-----------
Full Report
-----------

{"app_name":"makemkvcon","timestamp":"2025-03-03 18:36:58.00 -0500","app_version":"","slice_uuid":"00000000-0000-0000-0000-000000000000","build_version":"","platform":1,"share_with_app_devs":0,"is_first_party":1,"bug_type":"309","os_version":"macOS 15.4 (24E5222f)","roots_installed":0,"incident_id":"B1FA808F-B0CD-42B8-A222-AE5BDB006947","name":"makemkvcon"}
{
  "uptime" : 5600,
  "procRole" : "Unspecified",
  "version" : 2,
  "userID" : 501,
  "deployVersion" : 210,
  "modelCode" : "Mac14,15",
  "coalitionID" : 2254,
  "osVersion" : {
    "train" : "macOS 15.4",
    "build" : "24E5222f",
    "releaseType" : "User"
  },
  "captureTime" : "2025-03-03 18:36:58.8006 -0500",
  "codeSigningMonitor" : 1,
  "incident" : "B1FA808F-B0CD-42B8-A222-AE5BDB006947",
  "pid" : 4679,
  "translated" : false,
  "cpuType" : "ARM-64",
  "roots_installed" : 0,
  "bug_type" : "309",
  "procLaunch" : "2025-03-03 18:36:58.5136 -0500",
  "procStartAbsTime" : 136220858488,
  "procExitAbsTime" : 136227737190,
  "procName" : "makemkvcon",
  "procPath" : "\/Applications\/MakeMKV.app\/Contents\/MacOS\/makemkvcon",
  "parentProc" : "makemkv",
  "parentPid" : 4678,
  "coalitionName" : "com.makemkv.MakeMKV",
  "crashReporterKey" : "9EDCF247-5629-917E-0DDB-4FCCD45D555B",
  "appleIntelligenceStatus" : {"state":"available"},
  "responsiblePid" : 4678,
  "responsibleProc" : "makemkv",
  "codeSigningID" : "makemkvcon-a345d3af707c4029c063fe0620c1b6a672dd01cf",
  "codeSigningTeamID" : "",
  "codeSigningFlags" : 570425857,
  "codeSigningValidationCategory" : 10,
  "codeSigningTrustLevel" : 4294967295,
  "codeSigningAuxiliaryInfo" : 0,
  "instructionByteStream" : {"beforePC":"CPR+kj8FAHGgAABUFACA0gkBADUIIQCRBAAAFAgBQPkIAUD5CIEAkQ==","atPC":"CAFA+RTNdJL\/CwC59gsAuXQKALQopIRSCC20cimnhFIJLbRyAwAAFA=="},
  "bootSessionUUID" : "EDC01AFC-4773-4A16-9DDE-EA6A00492406",
  "wakeTime" : 5277,
  "sleepWakeUUID" : "0F42A85E-1959-4A31-B468-2E5C4556483E",
  "sip" : "enabled",
  "vmRegionInfo" : "0x8 is not in any region.  Bytes before following region: 4373135352\n      REGION TYPE                    START - END         [ VSIZE] PRT\/MAX SHRMOD  REGION DETAIL\n      UNUSED SPACE AT START\n--->  \n      __TEXT                      104a8c000-104f18000    [ 4656K] r-x\/r-x SM=COW  \/Applications\/MakeMKV.app\/Contents\/MacOS\/makemkvcon",
  "exception" : {"codes":"0x0000000000000001, 0x0000000000000008","rawCodes":[1,8],"type":"EXC_BAD_ACCESS","signal":"SIGSEGV","subtype":"KERN_INVALID_ADDRESS at 0x0000000000000008"},
  "termination" : {"flags":0,"code":11,"namespace":"SIGNAL","indicator":"Segmentation fault: 11","byProc":"exc handler","byPid":4679},
  "vmregioninfo" : "0x8 is not in any region.  Bytes before following region: 4373135352\n      REGION TYPE                    START - END         [ VSIZE] PRT\/MAX SHRMOD  REGION DETAIL\n      UNUSED SPACE AT START\n--->  \n      __TEXT                      104a8c000-104f18000    [ 4656K] r-x\/r-x SM=COW  \/Applications\/MakeMKV.app\/Contents\/MacOS\/makemkvcon",
  "extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"targeted":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"warnings":0},
  "faultingThread" : 4,
  "threads" : [{"id":142325,"threadState":{"x":[{"value":18446744073709551612},{"value":0},{"value":9219},{"value":0},{"value":50593839},{"value":3},{"value":0},{"value":0},{"value":9219},{"value":16908290},{"value":17},{"value":0},{"value":8639443864,"symbolLocation":0,"symbol":"vm_page_size"},{"value":5},{"value":2322034710},{"value":2319935505},{"value":515},{"value":8656584216},{"value":0},{"value":6096023552},{"value":2},{"value":6096023604},{"value":16908290},{"value":8639401440,"symbolLocation":224,"symbol":"_main_thread"},{"value":8639447108,"symbolLocation":0,"symbol":"_pthread_list_lock"},{"value":17},{"value":0},{"value":0},{"value":0}],"flavor":"ARM_THREAD_STATE64","lr":{"value":6776078504},"cpsr":{"value":1073745920},"fp":{"value":6093746224},"sp":{"value":6093746128},"esr":{"value":1442840704,"description":" Address size 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[ds1972]

Unfortunately, Beta 2 doesn't correct the issue.

[lostinlodos]

Unfortunately, Beta 2 doesn't correct the issue.

Damn. I was just going to suggest everyone hang on a half hour while I updated.

Apple locked down a LOT of things in 15.4. I'm spending almost as much time in privacy and security settings as I am using apps for the moment.
As a few others have said, this is a newly-locked access route that was previously open.
Apple locked down optical device access somewhere that was open before.
same access problem a few other apps, including VM and translation apps.

[asr101]

I am hoping that the developer will chime in with at least a "I'm looking into this"

[DavoBR]

I am hoping that the developer will chime in with at least a "I'm looking into this"

I'm not sure Apple is a member here