It also ends fine with Xcode + command line tools 27.2 Release Candidate. cat "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/SwiftUI.framework/Modules/SwiftUI.swiftmodule/arm64e-apple-macos.swiftinterface" // swift-interface-format-version: 1.0 // swift-compiler-version: Apple Swift version 6.4 effective-5.10 (swiftlang-6.4.0.31.4 clang-2100.3.31.1) // swift-module-flags: -target arm64e-apple-macos27.0 -enable-objc-interop -target-arch-variant arm64e.x1 -enable-library-evolution -language-mode 5 -O -library-level api -enable-experimental-feature AnyAppleOSAvailability -enable-upcoming-feature InferSendableFromCaptur es -enable-experimental-feature DebugDescriptionMacro -enable-bare-slash-regex -user-module-version 8.0.84.1.406 -module-name SwiftUI -package-name SwiftUI // swift-module-flags-ignorable: -formal-cxx-interoperability-mode=off -interface-compiler-version 6.4cat /Applications/Xcode\ 27.2\ RC.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.2.sdk/System/Library/Frameworks/SwiftUI.framework/Modules/SwiftUI.swiftmodule/arm64e-apple-macos.swiftinterface // swift-interface-format-version: 1.0 // swift-compiler-version: Apple Swift version 6.4.2 effective-5.10 (swiftlang-6.4.2.1.9 clang-2100.4.1.1) // swift-module-flags: -target arm64e-apple-macos27.2 -enable-objc-interop -target-arch-variant arm64e.x1 -enable-library-evolution -language-mode 5 -O -library-level api -enable-experimental-feature AnyAppleOSAvailability -enable-experimental-feature Lifetimes -enable-upcoming-feature InferSendableFromCaptures -enable-experimental-feature DebugDescriptionMacro -enable-bare-slash-regex -user-module-version 8.1.13.1.406 -module-name SwiftUI -package-name SwiftUI // swift-module-flags-ignorable: -formal-cxx-interoperability-mode=off -interface-compiler-version 6.4.2cat "/Applications/Xcode 27.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/SwiftUI.framework/Modules/SwiftUI.swiftmodule/arm64e-apple-macos.swiftinterface" // swift-interface-format-version: 1.0 // swift-compiler-version: Apple Swift version 6.4 effective-5.10 (swiftlang-6.4.0.31.4 clang-2100.3.31.1) // swift-module-flags: -target arm64e-apple-macos27.0 -enable-objc-interop -target-arch-variant arm64e.x1 -enable-library-evolution -language-mode 5 -O -library-level api -enable-experimental-feature AnyAppleOSAvailability -enable-upcoming-feature InferSendableFromCaptures -enable-experimental-feature DebugDescriptionMacro -enable-bare-slash-regex -user-module-version 8.0.84.1.406 -module-name SwiftUI -package-name SwiftUI // swift-module-flags-ignorable: -formal-cxx-interoperability-mode=off -interface-compiler-version 6.4Will stick to 27 until 27.2 is released.

Hello Quinn, Sorry, I switched to another project in the meantime. Back to this one. Yes indeed, the FileVault is enabled. But I did not get any error during the pairing step. Are the CTKs loaded at boot time / session login ? Regards, ++dom

Thank you very much BornP, I will check next week.