diff --git a/src/views/appstore.js b/src/views/appstore.js
index 5d33a5309..f9764383b 100644
--- a/src/views/appstore.js
+++ b/src/views/appstore.js
@@ -191,9 +191,9 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$loca
                             $scope.appInstall.subscriptionHelperPage = 'app_install_subscription_required.html';
                         }
                     } else if (error.statusCode === 409) {
-                        if (error.reason === 'Port Conflict') {
+                        if (error.portName) {
                             $scope.appInstall.error.port = error.message;
-                        } else if (error.reason === 'Location Conflict') {
+                        } else if (error.domain) {
                             $scope.appInstall.error.location = error.message;
                             $scope.appInstallForm.location.$setPristine();
                             $('#appInstallLocationInput').focus();
@@ -201,7 +201,7 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$loca
                             $scope.appInstall.error.other = error.message;
                         }
                     } else if (error.statusCode === 400) {
-                        if (error.reason === 'Invalid certificate') {
+                        if (error.field === 'cert') {
                             $scope.appInstall.error.cert = error.message;
                             $scope.appInstall.certificateFileName = '';
                             $scope.appInstall.certificateFile = null;