diff --git a/index.html b/index.html
index 04de1ceb..fb94d5ed 100644
--- a/index.html
+++ b/index.html
@@ -33,12 +33,12 @@
 
 
   <script type="text/javascript" src="js/lib/config.js"></script>
-  <script type="text/javascript" src="js/lib/mtproto.js?3"></script>
+  <script type="text/javascript" src="js/lib/mtproto.js?4"></script>
 
   <script type="text/javascript" src="js/util.js"></script>
   <script type="text/javascript" src="js/app.js?3"></script>
   <script type="text/javascript" src="js/services.js?6"></script>
-  <script type="text/javascript" src="js/controllers.js?6"></script>
+  <script type="text/javascript" src="js/controllers.js?7"></script>
   <script type="text/javascript" src="js/filters.js?3"></script>
   <script type="text/javascript" src="js/directives.js?5"></script>
 
diff --git a/js/controllers.js b/js/controllers.js
index 24304132..52f4a483 100644
--- a/js/controllers.js
+++ b/js/controllers.js
@@ -61,6 +61,7 @@ angular.module('myApp.controllers', [])
           $scope.error = {};
 
         }, function (error) {
+          dLog(error);
           $scope.progress.enabled = false;
           dLog('sendCode error', error);
           switch (error.type) {
@@ -71,11 +72,13 @@ angular.module('myApp.controllers', [])
         });
       }, function (error) {
         $scope.progress.enabled = false;
-        dLog('checkPhone error', error);
         switch (error.type) {
           case 'PHONE_NUMBER_INVALID':
             $scope.error = {field: 'phone'};
             break;
+
+          default:
+            ErrorService.showSimpleError('Unknown error occured', 'Please check your internet connection or install the latest version of Google Chrome browser.');
         }
       });
     }
diff --git a/js/lib/mtproto.js b/js/lib/mtproto.js
index 0485e17e..597640c0 100644
--- a/js/lib/mtproto.js
+++ b/js/lib/mtproto.js
@@ -2177,7 +2177,7 @@ factory('MtpApiManager', function (AppConfigManager, MtpAuthorizer, MtpNetworker
         return cachedNetworkers[dcID] = MtpNetworkerFactory.getNetworker(dcID, auth.authKey, auth.serverSalt);
       }, function (error) {
         dLog('Get networker error', error, error.stack);
-        return error;
+        return $q.reject(error);
       });
     });
   };
@@ -2257,6 +2257,8 @@ factory('MtpApiManager', function (AppConfigManager, MtpAuthorizer, MtpNetworker
             deferred.reject(error);
           }
         });
+    }, function (error) {
+      deferred.reject(error);
     });
 
     return deferred.promise;