Index: js/controllers/login.js
--- js/controllers/login.js.orig	2014-12-05 14:44:49.000000000 +0100
+++ js/controllers/login.js	2015-01-11 11:48:39.357993008 +0100
@@ -28,7 +28,7 @@
             $location.path('/boards');
         }).error(function(data, status) {
             $scope.isSaving = false;
-            $scope.errors.push(data.message);
+            $scope.errors.push(data.message + ": " + data.data);
             if (status === 503) {
                 $scope.errors[0] = $scope.errors[0] + ' Ensure api directory is writable.';
             }
