Xcode: failed to get the task for process

I am betting that your release mode includes compiling with your distribution certificate, which disallows this behavior (you wouldn't want some random fool hooking into your app after downloading it from the app store). Compile with the development certificate instead. You can change this in the building settings under code signing.

Change the profile for code signing. Select your project, go to Build Settings > Code Signing Identity. Switch to other developer profile.