 <p>Your getting that error because your building against the simulator in Xcode. </p> <p>Switch to your device and this goes away. </p> <p>If you didn't intent to run against the bundle re-comment this in AppDelegate.m</p> <pre><code>jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"]; </code></pre> <p>and turn your local dev server back on:</p> <pre><code>jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/index.ios.bundle?platform=ios&amp;dev=true"]; </code></pre>