Issue #74 - bug fixed

sails/src/assets/scripts/modules/student/controllers/collections.js

@@ -322,6 +322,9 @@ dashboardControllers.controller('StudentCollectionsCtrl', function StudentCollec
     // Returned data from the modal window
     modalInstance.result.then(function (pictoId) {
 
+      if(!pictoId)
+        return;
+
       // Send the picto to the server
       $http.put(config.backend + '/stu/' + $scope.studentData.id + '/cat', {
         prev_id_stu_pic: picto_cat.id,