Xcode 8 Messages Template Application: Error on iOS Simulator

Question

When I create a new project using the "Messages Application" template of Xcode 8 and try to run it on iOS simulator, I get the following error:

Title

The request to open com.myDomain.MyApp failed.

Details

The request was denied by service delegate (SBMainWorkspace) for reason: NotFound ("Application "com.myDomain.MyApp" is unknown to FrontBoard").

The message is the same for Objective-C and Swift projects.

I don't find any search result for this message yet, so any hint will be helpful. I will update the question as I progress.

Edit

This error occurred with Xcode 8 beta versions.

Answer 1

You may want to check your scheme. The executable should be asked on launch (You want to select Messages app). Edit Scheme -> Info -> Executable -> Ask on launch (rather than MyApp.app)

Answer 2

This happened to me when I was using a beta of xcode 8.1. When I upgraded the app store version of xcode from 8.0 to 8.1 this problem disappeared (and it never happened with 8.0, just the 8.1 beta). Couldn't find a reference to a bug or a fix, but if you're not using the official app store version of xcode it might be worth double checking.

Answer 3

I met the same problem，then i fixed it by two steps:

1. click the New Scheme, add a new scheme.

2. click the Manage Schemes, and delete the old.

then (Although I don't know why) I can run my project!

Answer 4

I had the same issue because I had an empty environment variable set in my current scheme.

I deleted this empty environment variable and was then able to build correctly.