Using Xcode 15 Beta 5 the following error now appears when building an app with @Observable External macro implementation type 'ObservationMacros.ObservableMacro' could not be found for macro 'Observable()'; the type must be public and provided by a macro target in a Swift package, or via '-plugin-path' or '-load-plugin-library' See the attached image. This does not happen on other team member’s computer. He can compile app just fine and I can compile app file on Xcode 15 beta 4 and below. This just started happening with Beta 5 installation. I have deleted all derived data, deleted the Derived data folder for the project, restarted Xcode, restarted machine, reinstalled Xcode 15 beta 5. Nothing helps.

Unable to Install “The BestSeller List” Building a new app when all of a sudden when I try to run on ANY of my devices, I get the following message: Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.HXa0sV/extracted/Best Seller List.app : 0xe8008015 (A valid provisioning profile for this executable was not found.) I have tried all of the suggestions I have found online: clean build folder, delete derived data, rebooting, etc. Nothing works. This happens on ALL of my test devices: iPhone 16 Pro, iPhone 14 Pro, iPhone XS, iPad Pro 6th gen. Here is the complete message dump: Unable to Install “The BestSeller List” Domain: IXUserPresentableErrorDomain Code: 14 Recovery Suggestion: Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.HXa0sV/extracted/Best Seller List.app : 0xe8008015 (A valid provisioning profile for this executable was not found.) Please ensure sure that your app is signed by a valid provisioning profile. If this issue persists, please attach the following when sending a report to Apple: A sysdiagnose from this Mac A sysdiagnose from the device failing installation An IPA of the app failing installation User Info: { DVTErrorCreationDateKey = "2025-07-10 01:20:54 +0000"; IDERunOperationFailingWorker = IDEInstallCoreDeviceWorker; } Failed to install the app on the device. Domain: com.apple.dt.CoreDeviceError Code: 3002 User Info: { NSURL = "file:///Users/feldy/Library/Developer/Xcode/DerivedData/Best_Seller_List-aziaphmgvhweszapcqlicacwcuow/Build/Products/Debug-iphoneos/Best%20Seller%20List.app"; } Unable to Install “The BestSeller List” Domain: IXUserPresentableErrorDomain Code: 14 Failure Reason: This app cannot be installed because its integrity could not be verified. Recovery Suggestion: Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.HXa0sV/extracted/Best Seller List.app : 0xe8008015 (A valid provisioning profile for this executable was not found.) Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.HXa0sV/extracted/Best Seller List.app : 0xe8008015 (A valid provisioning profile for this executable was not found.) Domain: MIInstallerErrorDomain Code: 13 User Info: { FunctionName = "+[MICodeSigningVerifier _validateSignatureAndCopyInfoForURL:withOptions:error:]"; LegacyErrorString = ApplicationVerificationFailed; LibMISErrorNumber = "-402620395"; SourceFileLine = 80; } Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : { "device_identifier" = "00008140-001C6C461AFB001C"; "device_isCoreDevice" = 1; "device_model" = "iPhone17,1"; "device_osBuild" = "18.5 (22F76)"; "device_platform" = "com.apple.platform.iphoneos"; "device_thinningType" = "iPhone17,1"; "dvt_coredevice_version" = "477.25"; "dvt_coresimulator_version" = 1043; "dvt_mobiledevice_version" = "1818.0.1"; "launchSession_schemeCommand" = Run; "launchSession_state" = 1; "launchSession_targetArch" = arm64; "operation_duration_ms" = 18446; "operation_errorCode" = 14; "operation_errorDomain" = IXUserPresentableErrorDomain; "operation_errorWorker" = IDEInstallCoreDeviceWorker; "operation_name" = IDERunOperationWorkerGroup; "param_debugger_attachToExtensions" = 0; "param_debugger_attachToXPC" = 1; "param_debugger_type" = 3; "param_destination_isProxy" = 0; "param_destination_platform" = "com.apple.platform.iphoneos"; "param_diag_113575882_enable" = 0; "param_diag_MainThreadChecker_stopOnIssue" = 0; "param_diag_MallocStackLogging_enableDuringAttach" = 0; "param_diag_MallocStackLogging_enableForXPC" = 1; "param_diag_allowLocationSimulation" = 1; "param_diag_checker_tpc_enable" = 1; "param_diag_gpu_frameCapture_enable" = 0; "param_diag_gpu_shaderValidation_enable" = 0; "param_diag_gpu_validation_enable" = 0; "param_diag_guardMalloc_enable" = 0; "param_diag_memoryGraphOnResourceException" = 0; "param_diag_mtc_enable" = 1; "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" = 0; "param_runnable_appExtensionHostRunMode" = 0; "param_runnable_productType" = "com.apple.product-type.application"; "param_structuredConsoleMode" = 1; "param_testing_launchedForTesting" = 0; "param_testing_suppressSimulatorApp" = 0; "param_testing_usingCLI" = 0; "sdk_canonicalName" = "iphoneos18.5"; "sdk_osVersion" = "18.5"; "sdk_variant" = iphoneos; } System Information macOS Version 15.5 (Build 24F74) Xcode 16.4 (23792) (Build 16F6) Timestamp: 2025-07-09T18:20:54-07:00