This app icon features multiple layers with the blend mode set to Screen. iOS fails to render these despite looking perfectly fine in Icon Composer.
This is unacceptable. How can a designer build an icon if they can't rely on it being displayed like the preview on a device?
Filed as FB20052048 with the .icon file attached.
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Hello,
I'm unable to run any test cases in Xcode 16 with the iOS 18 simulator.
Steps to Reproduce:
Create a new iOS project in Xcode 16 using the default iOS app template with the testing option checked.
Run any test or UI test case by clicking the "Play" icon in the Test navigator.
Xcode gets stuck at the "Testing" state indefinitely.
Environment:
macOS 15 beta 8
Xcode 16 beta 6
iOS 18 beta 7 simulator
There consistent build failure in Xcode Beta 26.0 (Build 24112) on a project targeting iOS. The build process fails with an error indicating that the actool utility is unable to decode its own version information, leading to the overall build failure.
error: Failed to decode version info for '/Applications/Xcode26.0.app/Contents/Developer/usr/bin/actool': The data couldn’t be read because it is missing.
Feedback: FB19969269
Creating a testapp with expo and then trying to open in XCode just hangs.
npx create-expo-app TestApp
cd TestApp
npx expo prebuild
cd ios
open TestApp.xcworkspace
This used to work, but I think stopped after something got upgraded to latest, because I tried uninstalling and reinstalling latest XCode, exp, pod and result is still the same.
Please Help!
Topic:
Developer Tools & Services
SubTopic:
Xcode
I selected "Show All Run Destinations", but it didn't work. Then I went to "Settings" -> "Components" in Xcode. and checked the "Simulator Architecture Variant" option, it was "Apple Silicon",I even tried deleting and re-downloading iOS 26, but the issue persisted.How can I install the iOS 26 Rosetta simulator?
Topic:
Developer Tools & Services
SubTopic:
Xcode
I have been using tvOS 18 and Xcode 26 all summer without issue but since updating the tv to the latest tvOS 26 beta I am now unable to attach to debug builds.
When using the Run button in Xcode the build completes, the tv screen goes black and then I see a warning in Xcode:
Launching "App Name" is taking longer than expected. Do you want to continue to wait?
LLDB is likely reading from device memory to resolve symbols.
If I continue to wait after around 5 mins, in the Xcode console, I see:
warning: libobjc.A.dylib is being read from process memory. This indicates that LLDB could not find the on-disk shared cache for this device. This will likely reduce debugging performance.
But the process on the tv hangs indefinately.
Hitting stop in Xcode disconnects the debugger but the app then finishes launching successfully on the TV.
Trying to use "Debug > Attach to process > [App Name]" once it is running also just hangs the app and waits until stopped.
When stopping the hung debugger I see an Xcode error with the following:
Could not attach to pid : “1222”
Domain: IDEDebugSessionErrorDomain
Code: 3
Failure Reason: internal error
User Info: {
DVTErrorCreationDateKey = "2025-09-01 09:51:54 +0000";
DVTRadarComponentKey = 855031;
IDERunOperationFailingWorker = DBGLLDBLauncher;
RawUnderlyingErrorMessage = "Xcode has killed the LLDB RPC server to allow the debugger to detach from your process. You may need to manually terminate your process.";
}
--
Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : {
"device_identifier" = "00008110-000240CE1A87801E";
"device_isCoreDevice" = 1;
"device_isWireless" = 1;
"device_model" = "AppleTV14,1";
"device_osBuild" = "26.0 (23J5348a)";
"device_osBuild_monotonic" = 2309534800;
"device_os_variant" = 1;
"device_platform" = "com.apple.platform.appletvos";
"device_platform_family" = 4;
"device_reality" = 1;
"device_thinningType" = "AppleTV14,1";
"device_transport" = 2;
"launchSession_schemeCommand" = Run;
"launchSession_schemeCommand_enum" = 1;
"launchSession_targetArch" = arm64;
"launchSession_targetArch_enum" = 6;
"operation_duration_ms" = 76122;
"operation_errorCode" = 3;
"operation_errorDomain" = IDEDebugSessionErrorDomain;
"operation_errorWorker" = DBGLLDBLauncher;
"operation_error_reportable" = 1;
"operation_name" = IDERunOperationWorkerGroup;
"param_consoleMode" = 0;
"param_debugger_attachToExtensions" = 0;
"param_debugger_attachToXPC" = 1;
"param_debugger_type" = 3;
"param_destination_isProxy" = 0;
"param_destination_platform" = "com.apple.platform.appletvos";
"param_diag_MainThreadChecker_stopOnIssue" = 0;
"param_diag_MallocStackLogging_enableDuringAttach" = 0;
"param_diag_MallocStackLogging_enableForXPC" = 0;
"param_diag_allowLocationSimulation" = 0;
"param_diag_checker_mtc_enable" = 0;
"param_diag_checker_tpc_enable" = 0;
"param_diag_gpu_frameCapture_enable" = 0;
"param_diag_gpu_shaderValidation_enable" = 0;
"param_diag_gpu_validation_enable" = 1;
"param_diag_guardMalloc_enable" = 0;
"param_diag_memoryGraphOnResourceException" = 0;
"param_diag_queueDebugging_enable" = 1;
"param_diag_runtimeProfile_generate" = 0;
"param_diag_sanitizer_asan_enable" = 0;
"param_diag_sanitizer_tsan_enable" = 0;
"param_diag_sanitizer_tsan_stopOnIssue" = 0;
"param_diag_sanitizer_ubsan_enable" = 0;
"param_diag_sanitizer_ubsan_stopOnIssue" = 0;
"param_diag_showNonLocalizedStrings" = 0;
"param_diag_viewDebugging_enabled" = 1;
"param_diag_viewDebugging_insertDylibOnLaunch" = 1;
"param_install_style" = 2;
"param_launcher_UID" = 2;
"param_launcher_allowDeviceSensorReplayData" = 0;
"param_launcher_kind" = 0;
"param_launcher_style" = 99;
"param_launcher_substyle" = 256;
"param_lldbVersion_component_idx_1" = 0;
"param_lldbVersion_monotonic" = 170300300002;
"param_runnable_appExtensionHostRunMode" = 0;
"param_testing_launchedForTesting" = 0;
"param_testing_suppressSimulatorApp" = 0;
"param_testing_usingCLI" = 0;
"sdk_canonicalName" = "appletvos26.0";
"sdk_osVersion" = "26.0";
"sdk_platformID" = 3;
"sdk_variant" = appletvos;
"sdk_version_monotonic" = 2309534400;
}
--
System Information
macOS Version 26.0 (Build 25A5349a)
Xcode 26.0 (24208.14) (Build 17A5305k)
Timestamp: 2025-09-01T10:51:54+01:00
I have another AppleTV still running on tvOS 18 and builds continue to run and attach fine there. I've tried rebooting the 26 beta AppleTV but I'm at a bit of a loss what else to try?
I am currently developing iOS applications as part of my company's operations. Due to company policy, the Mac used for app development is subject to monitoring through TLS inspection. Since implementing TLS inspection, I've encountered an issue where the iPhone connected to the Mac does not appear in Xcode, and as a result, I'm unable to install the development app on the iPhone.
After some investigation, I found that iPhones with pre-downloaded "device support files" are displayed in Xcode, while those without are not. This leads me to suspect that the TLS inspection is causing the failure in downloading the "device support files".
To resolve this, I would like to exclude the domain accessed during the "device support files" download from TLS inspection. Could anyone provide information on the domain Xcode accesses to download these files? Alternatively, if you know of another method to resolve this issue, please share your solution.
Environment:
macOS Sequoia 15.5
Xcode 16.1
Topic:
Developer Tools & Services
SubTopic:
Xcode
My Xcode crashed over and over again while I searing spefic file like "TingMusic". I have tried uninstall and install Xcode from 16.0 to 16.4, clear derived data folder, reboot my Mac, but none of these working. 😭
Translated Report (Full Report Below)
Process: Xcode [1811]
Path: /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier: com.apple.dt.Xcode
Version: 16.4 (23792)
Build Info: IDEApplication-23792000000000000~2 (16F6)
App Item ID: 497799835
App External ID: 874973124
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
User ID: 501
Date/Time: 2025-09-02 10:51:26.8582 +0800
OS Version: macOS 15.6 (24G84)
Report Version: 12
Anonymous UUID: 9835064A-AD7C-EE47-64DE-49587A7EC956
Time Awake Since Boot: 320 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6
Terminating Process: Xcode [1811]
Application Specific Information:
abort() called
Application Specific Signatures:
isSameDocumentAsURL
Kernel Triage:
VM - (arg = 0x3) mach_vm_allocate_kernel failed within call to vm_map_enter
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x186d5e388 __pthread_kill + 8
1 libsystem_pthread.dylib 0x186d9788c pthread_kill + 296
2 libsystem_c.dylib 0x186ca0a3c abort + 124
3 IDEKit 0x10890d888 +[IDEAssertionHandler _handleAssertionWithLogString:assertionSignature:assertionReason:extraBacktrace:] + 964
4 IDEKit 0x10890dcf8 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] + 872
5 DVTFoundation 0x1047839a0 _DVTAssertionHandler + 412
6 DVTFoundation 0x104783b04 _DVTAssertionFailureHandler + 196
7 IDEKit 0x1086e5178 -[IDENavigableItemCoordinator _navigableItemForFilePath:inWorkspace:withSeenFileReferences:computedNavItemsByContainerFilePath:allowLeaf:] + 2240
8 IDEKit 0x1086e3d24 -[IDENavigableItemCoordinator _structureNavigableItemForFileURL:inWorkspace:error:] + 268
9 IDEKit 0x1086e4658 -[IDENavigableItemCoordinator structureNavigableItemForDocumentURL:inWorkspace:error:] + 152
10 IDEKit 0x1086e89bc +[IDENavigableItemCoordinator temporaryStructureItemForDocumentURL:forWorkspace:error:inScope:] + 116
11 IDEKit 0x1088689e0 +[IDEOpenQuicklySubpathGenerator subpathForURL:lineNumber:isFromProject:showFileName:fromWorkspace:withAttributes:] + 716
12 IDEKit 0x108869a88 -[IDEOpenQuicklyResult(SubPath) subPathForWorkspace:withAttributes:] + 356
13 IDEKit 0x1088eee54 -[IDEOpenQuicklyResultDisplayRecord subtitle] + 172
14 IDEKit 0x10894bb1c -[IDEOpenQuicklyResult(ViewExtension) cellViewForOutlineView:displayRecord:delegate:] + 596
15 IDEKit 0x108849564 -[IDEQuickSearchWindowController outlineView:viewForTableColumn:item:] + 72
16 AppKit 0x18ae314a8 -[NSTableView(NSTableViewViewBased) makeViewForTableColumn:row:] + 176
17 AppKit 0x18ae30c0c -[NSTableRowData _addViewToRowView:atColumn:row:] + 228
18 AppKit 0x18ae2ed5c -[NSTableRowData _initializeRowView:atRow:] + 328
19 AppKit 0x18ae2d8ec -[NSTableRowData _preparedRowViewForRow:storageHandler:] + 140
20 AppKit 0x18ae2d7bc -[NSTableRowData _addRowViewForVisibleRow:withPriorView:] + 268
21 AppKit 0x18ae2d5e4 -[NSTableRowData _addRowViewForVisibleRow:] + 316
22 AppKit 0x18ae2cdf0 -[NSTableRowData _updateVisibleRowEntries] + 640
23 AppKit 0x18ae2c854 -[NSTableRowData updateVisibleRowViews] + 612
24 AppKit 0x18ae2bf08 -[NSTableView layout] + 148
25 AppKit 0x18b8d0fa8 ___NSViewLayout_block_invoke + 632
26 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108
27 AppKit 0x18adeb8d8 _NSViewLayout + 96
28 AppKit 0x18b8c72cc __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 372
29 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108
30 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100
31 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696
32 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108
33 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100
34 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696
35 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108
36 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100
37 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696
38 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108
39 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100
40 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696
41 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108
42 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100
43 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696
Whenever I hit play on my app to test it on the Mac the register .app part starts taking more than 15 minutes, this is severely impacting my work.
There's no indication on what's wrong and how can I fix this.
I'm trying to sign-in with a Sandbox account with my iOS simulator. Using Xcode 26 beta 7. After I sign in, the button goes inactive for a few seconds but then nothing happens. It does not actually sign me in.
My version is iOS 18.6.2 (22G100), watchOS 10.6.1 (21U580), macOS 15.3.1 (24D70), Xcode Version 16.4 (16F6). My iPhone can connect to Xcode and complete app installation testing. I have connected the iPhone to Xcode via USB, and both the iPhone and Apple Watch have been set to trust this device. The iPhone has Developer Mode enabled, but I cannot find Developer Mode in the Privacy & Security settings on the Apple Watch. As shown in the image, the Devices section in Xcode's Developer Documentation displays my iPhone but not the Apple Watch. However, the Open Console for the displayed iPhone shows my Apple Watch—actually two of them, though I only have one Apple Watch (the other might be from a previous backup). The iPhone app installs and tests normally, but the Apple Watch app cannot select a target device and fails to start installation. How can I resolve this issue?
Hello,
I have a Cocoa application from which I fork a new process (helper sort of) and it crashes on fork due to some cleanup code probably registered with pthreads_atfork() in Network framework.
This is crash from the child process:
Application Specific Information:
*** multi-threaded process forked ***
BUG IN CLIENT OF LIBPLATFORM: os_unfair_lock is corrupt
Abort Cause 258
crashed on child side of fork pre-exec
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_platform.dylib 0x194551238 _os_unfair_lock_corruption_abort + 88
1 libsystem_platform.dylib 0x19454c788 _os_unfair_lock_lock_slow + 332
2 Network 0x19b1b4af0 nw_path_shared_necp_fd + 124
3 Network 0x19b1b4698 -[NWConcrete_nw_path_evaluator dealloc] + 72
4 Network 0x19af9d970 __nw_dictionary_dispose_block_invoke + 32
5 libxpc.dylib 0x194260210 _xpc_dictionary_apply_apply + 68
6 libxpc.dylib 0x19425c9a0 _xpc_dictionary_apply_node_f + 156
7 libxpc.dylib 0x1942600e8 xpc_dictionary_apply + 136
8 Network 0x19acd5210 -[OS_nw_dictionary dealloc] + 112
9 Network 0x19b1beb08 nw_path_release_globals + 120
10 Network 0x19b3d4fa0 nw_settings_child_has_forked() + 312
11 libsystem_pthread.dylib 0x100c8f7c8 _pthread_atfork_child_handlers + 76
12 libsystem_c.dylib 0x1943d9944 fork + 112
(...)
I'm trying to create a child process with boost::process::child which does basically just a fork() followed by execv() and I do it before the - [NSApplication run] is called.
Is it know bug or behavior which I've run into? Also what is a correct way to spawn child processes in Cocoa applications? As far as my understanding goes the basically all the available APIs (e.g. posix, NSTask) should be more or less the same thing calling the same syscalls. So forking the process early before main run loop starts and not starting another NSApplication in forked child should be ok ...or not?
Hi everyone,
I’ve run into a strange issue while building my app with Xcode 26 beta 6 (targeting iOS 26). When I include an app icon created using Icon Composer, the build time jumps to over 5 minutes. During this time, I noticed that a utility called AssetCatalogSimulatorAgent is consuming a significant amount of CPU.
If I remove the Icon Composer-generated icon from my target, the build completes in about 40 seconds. This behavior is consistent across multiple builds.
Has anyone else experienced this? Is there a known workaround or optimization for icons created with Icon Composer? I’d love to keep using the new icon format, but the build time is becoming a real bottleneck.
Thanks in advance!
The window to show 'Simulators and Devices' does not show all relevant information about Simulator Devices. On top of the right window-pane the information about OS Version, name, etc is some kind cut off…strangely blurred > effect not readable/visible. Also the toggle is not clearly visible (but with good guess it is selectable).
Appearance mode (light or dark) has no influence. Reduce Transparency or increase contrast also no effect.
Got this issue since Xcode 26.0 (24198.5) (Build 17A5295f), and now in latest B7 still got this issue.
Running macOS Tahoe 26.0 Beta (25A5349a)
Does anybody else experience the same issue? Any workaround or fix known?
Already filed Feedback: FB19671411
We are experiencing troubles in our organization when we want to debug iOS applications on physical iPhones and iPads. Our iPhones (iPhone 16e, iOS 18.5) are not recognized by Xcode 16.4, but in the Finder they show up fine using the USB cable. We are aware, that the communication is different and there is an ad-hoc network that gets created to exchange the device profile.
Together with our IT department responsible for our security infrastructure we narrowed it down to the following reason:
As we are blocking all IPv6 traffic for local networking, the iPhone cannot communicate with Xcode to make the first connection and load the device profile. As they are not planning on changing this behavior, I am reaching out to you, if there is a way to force this first handshake between Xcode and iOS device to use IPv4? Or is there any other way to enable debugging for these devices? Any ideas would be very helpful.
I am experiencing an issue where XCode reverts .xccurrentversion file in my iOS app to the first version whenever xcodebuild is run or whenever XCode is started. This means I can build the app and run tests in XCode if I discard the reversion .xccurrentversion on XCode start. However, testing on CI is impossible because the version the tests rely on are reverted whenever xcodebuild is run.
The commands I run to reproduce the issue
❯ git status
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: Path/.xccurrentversion
no changes added to commit (use "git add" and/or "git commit -a")
❯ git checkout "Path/.xccurrentversion"
Updated 1 path from the index
❯ git status
nothing to commit, working tree clean
❯ xcodebuild \
-scheme Scheme \
-configuration Configuration \
-sdk iphonesimulator \
-destination 'platform=iOS Simulator,name=iPhone 16 Pro,OS=latest' \
-skipPackagePluginValidation \
-skipMacroValidation \
test > /dev/null # test fails because model version is reverted
❯ git status
HEAD detached at pull/249/merge
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: Path/.xccurrentversion
no changes added to commit (use "git add" and/or "git commit -a")
I have experienced such issue in 16.3 (16E140) and 16.2 (16C5032a).
Similar issues/solutions I have found online are the following. But they are either not relevant or do not work in my case.
https://stackoverflow.com/questions/17631587/xcode-modifies-current-coredata-model-version-at-every-launch
https://github.com/CocoaPods/Xcodeproj/issues/81
Is anyone aware of any solution? Is there a recommended way I can run diagnostics on XCode and file a feedback?
Hi!
I must be missing something. I am creating a MacOS dynamic library using Xcode. I have created the library as follows:
File->New Project then choose macOS 'Library' in Frameworks and Libraries.
I give the Product Name "TestLib".
Framework: STL (C++ Library)
Type: Dynamic
This creates a default library project, with one exported class 'TestLib'. There's a method "HelloWorld". And this suffices for my issue.
To be able to test my dynamic library, I want to use an XCtest target.
So in the project settings, I select '+', and add a 'Unit Testing Bundle':
Product name: TestLibTests
Language: Swift
Testing System: XCTest
Project: TestLib
Target to be tested: TestLib
I press finish, and my test target is created.
Now, I think I need to have a module map. So I Add New File From Template', and choose 'Module Map'. A 'module.modulemap' is created. In the module map file, I name the module 'TestLib', and header 'TestLib.h'.
So far, everything makes sense, and no errors. But here it comes...
When I want to make a testcase, I need to import the module. I first built the dylib library, to make sure it's built without errors and exists.
Then I switch to the TestLibTests target and want to write my first test. Simply creating an object from the TestLib class. For that, I have to import the module, so I write 'import TestLib' after the 'import XCTest' at the top.
And here is where I'm stuck. No matter what I do, Xcode just gives me the error 'No such module TestLib'.
This should just work, right? I should be able to unit test my library. I have spent 2 days reading the internet and trying many suggestions, but I just can't get it to work.
I am currently working with Xcode 26 beta. But I tried with Xcode 16.4 and that has the same issue.
What am I missing?
If you need help investigating a crash, please include a crash report in your post. To smooth things along, follow these guidelines:
For information on how to get a crash report, see Acquiring crash reports and diagnostic logs.
Include the whole crash report as a text attachment (click the paperclip icon and then choose Add File). This avoids clogging up the timeline while also preserving the wealth of information in the crash report.
If you’re not able to post your crash report as an attachment, see Can’t Post Crash Report as Attachment below.
If you want to highlight a section of the report, include it in the main body of your post. Put the snippet in a code block so that it renders nicely. To create a code block, add a delimiter line containing triple backquotes before and after the block, or just click the Code Block button.
If possible, post an Apple crash report. Third-party crash reporters are often missing critical information and have general reliability problems (for an explanation as to why, see Implementing Your Own Crash Reporter).
Symbolicate your crash report before posting it. For information on how to do this, see Adding identifiable symbol names to a crash report.
If you need to redact the crash report, do so consistently. Imagine you’re building the WaffleVarnish app whose bundle ID is com.example.wafflevarnish but you want to keep your new waffle varnishing technology secret. Replace WaffleVarnish with WwwwwwVvvvvvv and com.example.wafflevarnish with com.eeeeeee.wwwwwwvvvvvvv. This keeps the text in the crash report aligned while making it possible to distinguish the human-readible name of the app (WaffleVarnish) from the bundle ID (com.example.wafflevarnish).
Finally, for information on how to use a crash report to debug your own problems, see Diagnosing issues using crash reports and device logs.
Can’t Post Crash Report as Attachment
Crash reports have two common extensions: .crash and .ips. If you have an .ips file, please post that [1].
DevForums lets you attach a .crash file but not an .ips file (r. 117468172). To work around this, change the extension to .txt.
If DevForums complains that your crash report “contains sensitive language”, leave it out of your initial post and attach it to a reply. That often avoids this roadblock.
If you still can’t post your crash report, upload it to a file sharing service and include the URL in your post. Post the URL in the clear, per tip 14 in Quinn’s Top Ten DevForums Tips.
Getting a Crash Report from the Xcode Organiser
The Xcode organiser shows crash reports from customers. If you’re investigating such a crash and want to post a crash report:
Navigate to the crash in the Xcode organiser.
Note If you can’t see the right crash, check the filter popups at the top.
In the list of crashes, secondary click on your crash and choose Show in Finder.
That reveals the Xcode crashpoint document (.xccrashpoint) in the Finder. Secondary click on that and choose Show Package Contents.
In the resulting Finder window, find a crash report (.crash) that accurately represents the crash you’re investigating and attach that to your forums post.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"
[1] Because it’s easy to go from an .ips file to a .crash file. I usually do this by choosing File > Quick Look in the Finder. For more info about these file formats, see this post.
Revision History:
2025-08-29 Added the Getting a Crash Report from the Xcode Organiser section.
2024-11-21 Added a recommendation to post the .ips format if possible.
2024-05-21 Added some advice regarding the “contains sensitive language” message.
2023-10-25 Added the Can’t Post Crash Report as Attachment section. Made other minor editorial changes.
2021-08-26 First posted.
Hello there!
I’m currently stuck with Xcode 26.0 beta 6 (17A5305f), as I can’t download the latest SDK/Simulator for iOS 26.0 beta 6 (23A5324a). The download constantly fails for days now with the following error message:
(-67061 invalid signature (code or signature have been modified)
Domain: SimDiskImageErrorDomain
Code: 5
User Info: {
DVTErrorCreationDateKey = "2025-08-26 21:11:30 +0000";
unusableErrorDetail = "";
}
--
(-67061 invalid signature (code or signature have been modified)
Domain: SimDiskImageErrorDomain
Code: 5
User Info: {
unusableErrorDetail = "";
}
--
System Information
macOS Version 15.6.1 (Build 24G90)
Xcode 26.0 (24208.7) (Build 17A5305f)
Timestamp: 2025-08-26T23:11:30+02:00
I’ve already tried re-downloading the Xcode beta 6 from the Apple Developer site. I’ve also tried restarting my Mac and even tried to use the command line to install iOS 26 beta SDK via xcodebuild -downloadPlatform iOS -exportPath ~/Downloads (as noted here). This lead to the same error message.
Can someone help? I’m unable to develop my apps right now! 🫠
I’ve also filed a feedback: FB19915834
I keep getting "iOS 18.5 must be installed": dialoge box and when i try downloding 18.5 it fail Download failed.
Domain: DVTDownloadableErrorDomain
Code: 41
User Info: {
DVTErrorCreationDateKey = "2025-08-24 20:40:42 +0000";
}
Download failed.
Domain: DVTDownloadableErrorDomain
Code: 41
Failed fetching catalog for assetType (com.apple.MobileAsset.iOSSimulatorRuntime), serverParameters ({
RequestedBuild = 22G86;
})
Domain: DVTDownloadsUtilitiesErrorDomain
Code: -1
Download failed due to a bad URL. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime)
Domain: com.apple.MobileAssetError.Download
Code: 49
User Info: {
checkConfiguration = 1;
}
System Information
macOS Version 15.5 (Build 24F74)
Xcode 16.4 (23792) (Build 16F6)
Timestamp: 2025-08-24T21:40:42+01:00