missing package product

Hi, Sorry to hear you are having problems getting previews working. This error can often indicate a crash in your application when it launches, or a problem with the simulator. If you look into the folder ~/Library/Logs/DiagnosticReports, do you see any crash reports for your app? If not, the best next step will be to file a feedback with diagnostics so we can take a look. Steps to generate helpful diagnostics: Download and install the logging profile on all devices involved. Instructions and profiles are available here: https://developer.apple.com/bug-reporting/profiles-and-logs/?name=swift Reproduce the issue Click the Diagnostics button in the error banner in Previews' Canvas area (or if the banner is missing you can use the menu: Editor > Canvas > Diagnostics) In the sheet that appears, click Generate Report in the bottom left of the sheet Attach (or make from the folder) the resulting zip file to the bug report (will be named something like previews-diagnostics-0123456789.zip) Generate the

There is a bunch of stuff to unpack here. First up, I’m gonna assume that you’re familiar with the backstory in App Groups: macOS vs iOS: Fight!. If not, read it now. In that I wrote: In Mac Catalyst things behave as they do on iOS. and I wasn’t kidding. A Mac Catalyst app should use iOS-style app group names (group.*), where those app group entitlement claims are authorised by its provisioning profile. Here’s an example of that: % vtool -show-build Test758358.app/Contents/MacOS/Test758358 … platform MACCATALYST … % codesign -d --entitlements - Test758358.app … [Key] application-identifier [Value] [String] SKMME9E2Y8.com.example.apple-samplecode.Test758358 [Key] com.apple.application-identifier [Value] [String] SKMME9E2Y8.com.example.apple-samplecode.Test758358 … [Key] com.apple.security.application-groups [Value] [Array] [String] group.eskimo1.test … % security cms -D -i Test758358.app/Contents/embedded.provisionprofile | plutil -p - { … Entitlements => { application-identifier => SKMME9E2Y8.com.exampl

It seems you are on the right track but are encountering a specific issue with Xcode's handling of self-signed certificates. Here are some steps to troubleshoot and potentially resolve the problem: Ensure Certificate Trust Settings: Verify that both the root CA Dev Authority and the leaf certificate Testing 123 are trusted for code signing in Keychain Access. Open Keychain Access. Find Dev Authority, right-click, and select Get Info. Go to the Trust section and set Code Signing to Always Trust. Do the same for the Testing 123 certificate. Verify Key Usage Extensions: Ensure that the leaf certificate has the appropriate key usage extensions for code signing. Open Keychain Access. Find Testing 123, right-click, and select Get Info. Check under the Details tab to see if it includes Digital Signature under Key Usage and Code Signing under Extended Key Usage. Check Certificate Validity Period: Ensure that the certificate is valid for the current date and has not expired. This can be checked in the Details tab of t

Welcome to the forum. I tested your code (after completing missing parts and removing reference to unknown structure) and it works OK, both with Xcode 16.0ß2 and Xcode 15.0.1. Are you sure you have declared var as State vars ? Have you declared dismiss ? Aren't you missing a closing curly bracket somewhere ? Where exactly do you get the error ? Please show the exact and complete code, as well as your configuration (Xcode version, system version…) Here is the complete code I tested: struct ContentView: View { @State var companyName: String = @State var role: String = @State var location: String = @State var yearlySalary: Double = 0 @Environment(.dismiss) var dismiss var body: some View { NavigationStack { Form { TextField(Company Name, text: $companyName) TextField(Role, text: $role) TextField(Location, text: $location) TextField(Yearly Salary, value: $yearlySalary, format: .currency(code: USD)) .keyboardType(.decimalPad) } .navigationTitle(Add Application) .navigationBarTitleDisplayMode(.

[quote='794608022, swp336, /thread/759022?answerId=794608022#794608022, /profile/swp336'] I'm assuming there's something about the setup on my machine that's causing the newly minted template files created by Xcode to trigger the one of the error conditions. [/quote] Right. I’m hoping that, once you track down the identity of this ‘detritus’, it’ll be clear where it’s coming from. For example, I vaguely recall seeing a problem like this where the developer had their build products on iCloud Drive, and iCloud Drive’s extended attributes were causing this issue. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com

Truffle &/or any Ethereum tools are not an apple product. Post your questions on the Truffle support board.