Watchman Error, cannot deploy to device

I’ve been looking all day for a solution, and either I’m looking in the wrong places, or this error hasn’t been seen yet.

I’m trying to deploy my app to my iPhone 6 (iOS 9.3) in Release mode. This is my AppDelegate.m:

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

#import "AppDelegate.h"

#import "RCTRootView.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  NSURL *jsCodeLocation;

  /**
   * Loading JavaScript code - uncomment the one you want.
   *
   * OPTION 1
   * Load from development server. Start the server from the repository root:
   *
   * $ npm start
   *
   * To run on device, change `localhost` to the IP address of your computer
   * (you can get this by typing `ifconfig` into the terminal and selecting the
   * `inet` value under `en0:`) and make sure your computer and iOS device are
   * on the same Wi-Fi network.
   */

  //jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/index.ios.bundle?platform=ios&dev=true"];

  /**
   * OPTION 2
   * Load from pre-bundled file on disk. The static bundle is automatically
   * generated by the "Bundle React Native code and images" build step when
   * running the project on an actual device or running the project on the
   * simulator in the "Release" build configuration.
   */

  jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];

  RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
                                                      moduleName:@"◼︎◼︎◼︎◼︎"
                                               initialProperties:nil
                                                   launchOptions:launchOptions];

  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  UIViewController *rootViewController = [UIViewController new];
  rootViewController.view = rootView;
  self.window.rootViewController = rootViewController;
  [self.window makeKeyAndVisible];
  return YES;
}

@end

It boots up fine in Debug mode, but when I try to bundle it for release, the build fails and I get the following error from watchman:

[sane] Warning: Lost connection to watchman, reconnecting..
[sane] Warning: Lost connection to watchman, reconnecting..
2016-04-15T16:33:51,872: [cli] failed to identify PDU: fill_buffer: EOF
2016-04-15T16:33:51,874: [cli] unable to talk to your watchman on /usr/local/Cellar/watchman/4.4.0/var/run/watchman/%n-state/sock! (Undefined error: 0)

2016-04-15T16:33:51,873: [cli] failed to identify PDU: fill_buffer: EOF
2016-04-15T16:33:51,874: [cli] unable to talk to your watchman on /usr/local/Cellar/watchman/4.4.0/var/run/watchman/%n-state/sock! (Undefined error: 0)

Watchman:  watchman--no-pretty get-sockname returned with exit code 1 2016-04-15T16:33:51,873: [cli] failed to identify PDU: fill_buffer: EOF
2016-04-15T16:33:51,874: [cli] unable to talk to your watchman on /usr/local/Cellar/watchman/4.4.0/var/run/watchman/%n-state/sock! (Undefined error: 0)

 ERROR  watchman--no-pretty get-sockname returned with exit code 1 2016-04-15T16:33:51,873: [cli] failed to identify PDU: fill_buffer: EOF
2016-04-15T16:33:51,874: [cli] unable to talk to your watchman on /usr/local/Cellar/watchman/4.4.0/var/run/watchman/%n-state/sock! (Undefined error: 0)

Error: watchman--no-pretty get-sockname returned with exit code 1 2016-04-15T16:33:51,873: [cli] failed to identify PDU: fill_buffer: EOF
2016-04-15T16:33:51,874: [cli] unable to talk to your watchman on /usr/local/Cellar/watchman/4.4.0/var/run/watchman/%n-state/sock! (Undefined error: 0)

    at ChildProcess.<anonymous> (/Users/jonlaing/projects/Partisan/node_modules/fb-watchman/index.js:198:18)
    at emitTwo (events.js:87:13)
    at ChildProcess.emit (events.js:172:7)
    at maybeClose (internal/child_process.js:818:16)
    at Socket.<anonymous> (internal/child_process.js:319:11)
    at emitOne (events.js:77:13)
    at Socket.emit (events.js:169:7)
    at Pipe._onclose (net.js:469:12)

Versions

• OSX 10.11.4
• Xcode 7.3
• react-native 0.23.1
• node 5.0
• npm 3.3.6
• watchman 4.4.0

I’m not all that familiar with the inner workings of all this, so any help would be greatly appreciated. Thanks for your time!