fixed issue #555

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

@@ -56,7 +56,9 @@ dashboardControllers.controller('StudentCollectionsCtrl', function StudentCollec
 
 
   $scope.isCategory = function (studentPicto) {
   $scope.isCategory = function (studentPicto) {
     return studentPicto.attributes.id_cat === null &&
     return studentPicto.attributes.id_cat === null &&
-           studentPicto.attributes.coord_x !== 0;
+           studentPicto.attributes.coord_x !== 0 &&
+           typeof studentPicto.attributes.free_category_coord_x !== 'number' &&
+           typeof studentPicto.attributes.free_category_coord_y !== 'number';
   };
   };
 
 
   $scope.getCategoryId = function (studentPicto) {
   $scope.getCategoryId = function (studentPicto) {