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build disappears

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Reply to Undefined symbol
Historically I’ve seen errors like this when different parts of your Mach-O image — so object (.o) files or static libraries (.a) — are build with different tools or different deployment targets. Make sure that: You’ve rebuilt everything with Xcode 26. Your deployment targets are consistent. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Programming Languages SubTopic: Swift Tags:
Sep ’25
I get an error in App Store Connect
Hello Support Team macOS : Sequpia 15.4.1 Xcode : 16.3 ・Certificates ・Profiles I recreated the above and registered them in the keychain. I can build in Xcode Product → Archive ・Validate App ・Distribute APp I have done the above but I am unable to update When I try to update the app, I get the following error Missing or invalid signature. The bundle 'Bundle ID' at bundle path 'Payload/App Name.app' is not signed using an Apple submission certificate. How can I do this?
Topic: App Store Distribution & Marketing SubTopic: App Store Connect
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108
Sep ’25
Critical iOS 26.0 Bug: UIInputView Focus Management Causes System-Wide Keyboard Failure
Dear Apple Developer Support, I am reporting a critical bug in iOS 26.0 that affects the entire system's keyboard functionality and device performance. Issue Description: When a UIInputView is displayed and a new ViewController is presented, the UIInputView loses focus and disappears. After the presented ViewController is dismissed, the UIInputView regains focus and reappears. However, in this specific scenario, the app becomes completely unresponsive without any error logs or crashes. Critical System Impact: The device becomes sluggish and performance degrades significantly Other apps' keyboard functionality is completely broken - text fields cannot activate keyboards This is a system-level issue that persists even after the affected app is terminated Device performance remains degraded until restart Technical Details: The issue appears to be related to First Responder chain corruption during UIInputView focus transitions No crashes or error logs are generated, making it difficult to debug The probl
Topic: UI Frameworks SubTopic: UIKit
2
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112
Sep ’25
Team membership not appearing in Xcode
I have a major problem with team membership and Xcode. I work in a company, where my apple account was added to the development team with app manager role. I can see that on the apple portal, everything seems fine there. I have been also provided with the provisioning profile for the project and signing certificate of the company. However, when I log into Xcode the team does not show up anywhere. I am able to build the app, but cannot distribute to TestFlight (or anywhere else). When I use manual signing to choose the signing certificate it shows the unknown team message next to it. When I check my account in xcode it also only shows my personal team and does not allow to pick any other one (doesn't show any other one). When I click the + button on my xcode account to add a certificate an error pops up: You already have active certificate or a pending request. I do have a pending request to enroll into apple developers program, but everyone says you don't need one if you are added to the team, you ca
Topic: Developer Tools & Services SubTopic: Xcode Tags:
2
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595
Sep ’25
Slow incremental build times with xcodebuild command
When I compile my Xcode project using the xcodebuild command, I observe long incremental build durations. For example, compiling a new, empty project in Xcode only takes around one second. The same project takes 7 seconds to compile using the xcodebuild command. I've noticed that xcodebuild hangs at the GatherProvisioningInputs phase. Steps to Reproduce: Create a new Xcode project (iOS app template) Build the project in Xcode with timing summary enabled Build the same project from the command line with the following command: time xcodebuild -destination 'platform=iOS Simulator,name=iPhone 15 Pro,OS=latest' I would appreciate any insights or suggestions on how to improve the build times when using the xcodebuild command. Thank you in advance for your help!
Topic: Developer Tools & Services SubTopic: Xcode Tags:
10
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4.9k
Sep ’25
Reply to Slow incremental build times with xcodebuild command
I ran some tests and can confirm that with Xcode 26, xcodebuild now works just as fast as Xcode 16 with the workaround. This is true both when rebuilding the app without any changes and when performing incremental builds after making changes. I also noticed that Xcode 26 no longer calls the slow developerservices2.apple.com. Instead, it uses https://ocsp2.apple.com, which is much faster.
Topic: Developer Tools & Services SubTopic: Xcode Tags:
Sep ’25
Icon for some menu items cannot be removed on macOS 26
create a sample XCode project using Objective-C and stroybook (xib) using latest XCode beta open MainMenu.xib, and select Main Menu → File → Print... remove the image like below 4. build it 5. run it on macOS 26 beta 7 6. The menu item print.. still have Image Is there any way to remove image for one menu item. I have also tried NSMenuItem.image = nil, but still not work. The issue I met on my own app is that I cannot remove icons for Zoom In, Zoom Out and many other menu items, which makes the menu items not aligned properly.
Topic: UI Frameworks SubTopic: AppKit Tags:
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174
Sep ’25
Reply to Custom NSMigrationPolicy methods not invoked when NSMappingModel is created in code
Hi, Following the advice I received here, I switched to using NSStagedMigrationManager instead of trying to drive a custom NSMappingModel entirely in code. I now have a staged migration pipeline with two stages: • Stage 1 (V1 → V2): a lightweight migration. • Stage 2 (V2 → V3): a custom migration where I re-archive a Transformable attribute (object) from a legacy ValueTransformer to a safe binary format (GraphArchiver). Both models are built entirely at runtime (no .xcdatamodeld files). Each model has a unique versionChecksum string (hardcoded identifiers: GraphCK_MigrationV1, GraphCK_MigrationV2, GraphCK_MigrationV3). When I run the staged migration manager with these two stages, I consistently hit this exception: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Duplicate version checksums across stages detected.' Debug logging shows: Stage1 checksums: [GraphCK_MigrationV1, GraphCK_MigrationV2] Stage2 checksums: [GraphCK_MigrationV2, GraphCK_MigrationV3] So the identifiers
Topic: App & System Services SubTopic: iCloud & Data Tags:
Sep ’25
Reply to Instructions for debugging recent macos kernel versions?
Is there any recent and a bit authoritative documentation which explains how to debug recent versions of macos kernel? No, nothing for arm* that's directly published by Apple. However, I'm told by an engineer on the kernel team that the arm install instructions here work: https://kernelshaman.blogspot.com/2021/02/building-xnu-for-macos-112-intel-apple.html *The process for Intel hasn't really changed. __ Kevin Elliott DTS Engineer, CoreOS/Hardware
Topic: App & System Services SubTopic: Core OS Tags:
Sep ’25
Canvas Preview: Cannot preview in this file
Hi, I want to follow the SwiftUI tutorials from Apple Developer. After creating the “Landmarks” app and clicking on ContentView, the preview shows: Cannot preview in this file Failed to launch net.bayerthomas.Landmarks with the Diagnostics: == PREVIEW UPDATE ERROR: FailedToLaunchAppError: Failed to launch net.bayerthomas.Landmarks ================================== | [Remote] JITError | | ================================== | | | [Remote] CouldNotLoadInputObjectFile: Could not load object file during preview: /Users/thomas/Library/Developer/Xcode/DerivedData/Landmarks-gpfsfizlhntsahandeumxmhwbjfj/Build/Intermediates.noindex/Landmarks.build/Debug-iphonesimulator/Landmarks.build/Objects-normal/arm64/ContentView.1.preview-thunk-launch.o | | | | path: /Users/thomas/Library/Developer/Xcode/DerivedData/Landmarks-gpfsfizlhntsahandeumxmhwbjfj/Build/Intermediates.noindex/Landmarks.build/Debug-iphonesimulator/Landmarks.build/Objects-normal/arm64/ContentView.1.preview-thunk-launch.o | | | | ============
Topic: UI Frameworks SubTopic: SwiftUI
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125
Sep ’25
Reply to Canvas Preview: Cannot preview in this file
On my Mac mini M4 Pro, I’ve installed macOS Tahoe 26.0 and Xcode 26.0.1. The error message still appears, even when testing with the iPhone 17 Pro and iPad Pro 11-inch M4 simulators. The FB numer is: FB20362054 == PREVIEW UPDATE ERROR: GroupRecordingError Error encountered during update group #19 ================================== | FailedToLaunchAppError: Failed to launch net.thomasbayer.ChatPrototype | | ================================== | | | [Remote] JITError | | | | ================================== | | | | | [Remote] CouldNotLoadInputObjectFile: Could not load object file during preview: /Users/thomas/Library/Developer/Xcode/DerivedData/ChatPrototype-ebbbmisjgapzykawaadxudtxyjmg/Build/Intermediates.noindex/ChatPrototype.build/Debug-iphonesimulator/ChatPrototype.build/Objects-normal/arm64/ChatPrototypeApp.o | | | | | | path: /Users/thomas/Library/Developer/Xcode/DerivedData/ChatPrototype-ebbbmisjgapzykawaadxudtxyjmg/Build/Intermediates.noindex/ChatPrototype.build/Debug-iphonesimulator
Topic: UI Frameworks SubTopic: SwiftUI
Sep ’25
joblinkapp's registerview mistake
I am working on a SwiftUI project using Core Data. I have an entity called AppleUser in my data model, with the following attributes: id (UUID), name (String), email (String), password (String), and createdAt (Date). All attributes are non-optional. I created the corresponding Core Data class files (AppleUser+CoreDataClass.swift and AppleUser+CoreDataProperties.swift) using Xcode’s automatic generation. I also have a PersistenceController that initializes the NSPersistentContainer with the model name JobLinkModel. When I try to save a new AppleUser object using: let user = AppleUser(context: viewContext) user.id = UUID() user.name = User1 user.email = ... user.password = password1 user.createdAt = Date()【The email is correctly formatted, but it has been replaced with “…” for privacy reasons】 try? viewContext.save() I get the following error in the console:Core Data save failed: Foundation._GenericObjCError.nilError, [:] User snapshot: [id: ..., name: User1, email: ..., password: ..., createdAt: ...] All field
Topic: App & System Services SubTopic: iCloud & Data Tags:
3
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104
Sep ’25
StoreKit error while testing
Hello, I'm receiving error StoreKit: Failed to get response from platform. I have user in SandBox, that user is logged on physical device, I have correct bundleID. Product is Approved I tested via StoreKit configuration file and that worked just fine. also tried to build app and push to test flight, this way same error. Any recommendations what I can check ? Thanks
Topic: App Store Distribution & Marketing SubTopic: TestFlight Tags:
3
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271
Sep ’25
Private UIKit code causes a crash when the app moves to the background on iOS 26
After iOS 26 was released to the public and our build began rollout, we started seeing a strange crash affect users immediately after the app goes to the background. According to the symbolication provided in Xcode, this appears to be the result of a UICollectionView potentially related to the keyboard and a UIAlertController. I’m not sure how an error somewhere else can cause a crash in our app which does not use UIKit in the background. The feedback associated with this post is: FB20305833. I will attach a sample of the crash report in my next comment.
Topic: UI Frameworks SubTopic: UIKit Tags:
5
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182
Sep ’25