When I try to run the Xcode simulator I get the error 'Stop “(null)”?'
Getting this as well with Xcode 7.
I've been following these simple steps to avoid seeing the error:
- Build your app.
- Run your app.
Annoying, and not a solution, but I think this is a bug within Xcode 7.
Completely quitting Xcode 7 and reloading resolved the simulator is already running it for me.
I got this error too, and building and then running the app (cmd+b ; cmd+r) solved the problem.