diff --git a/React/Base/RCTBridge.h b/React/Base/RCTBridge.h
index a37b9ac7db946f..6dfbe2414557f8 100644
--- a/React/Base/RCTBridge.h
+++ b/React/Base/RCTBridge.h
@@ -92,7 +92,7 @@ static const char *__rct_import_##module##_##method##__ = #module"."#method;
 /**
  * URL of the script that was loaded into the bridge.
  */
-@property (nonatomic, copy, readonly) NSURL *bundleURL;
+@property (nonatomic, copy) NSURL *bundleURL;
 
 @property (nonatomic, strong) Class executorClass;
 
diff --git a/React/Base/RCTJavaScriptLoader.m b/React/Base/RCTJavaScriptLoader.m
index 4eaaf278dd480e..dd8fab461868fd 100755
--- a/React/Base/RCTJavaScriptLoader.m
+++ b/React/Base/RCTJavaScriptLoader.m
@@ -85,8 +85,9 @@ - (void)loadBundleAtURL:(NSURL *)scriptURL onComplete:(void (^)(NSError *))onCom
                                   // Handle general request errors
                                   if (error) {
                                     if ([[error domain] isEqualToString:NSURLErrorDomain]) {
+                                      NSString *desc = [@"Could not connect to development server. Ensure node server is running and available on the same network - run 'npm start' from react-native root\n\nURL: " stringByAppendingString:[scriptURL absoluteString]];
                                       NSDictionary *userInfo = @{
-                                                                 NSLocalizedDescriptionKey: @"Could not connect to development server. Ensure node server is running - run 'npm start' from ReactKit root",
+                                                                 NSLocalizedDescriptionKey: desc,
                                                                  NSLocalizedFailureReasonErrorKey: [error localizedDescription],
                                                                  NSUnderlyingErrorKey: error,
                                                                  };