--- a/src/pyams_skin/resources/js/myams.js	Wed Nov 15 17:02:31 2017 +0100
+++ b/src/pyams_skin/resources/js/myams.js	Wed Nov 15 17:03:30 2017 +0100
@@ -3734,6 +3734,8 @@
 																	   column = columns[index] || {};
 																	   column.bSortable = sortable;
 																	   columns[index] = column;
+																   } else {
+																	   columns[index] = columns[index] || {};
 																   }
 															   }
 															   // Check columns types
@@ -3744,6 +3746,8 @@
 																	   column = columns[index] || {};
 																	   column.sType = sortType;
 																	   columns[index] = column;
+																   } else {
+																	   columns[index] = columns[index] || {};
 																   }
 															   }
 															   // Set options
@@ -3820,7 +3824,7 @@
 																			   sources.push(ams.baseURL + 'ext/jquery-dataTables-keyTable' + ams.devext + '.js');
 																			   break;
 																		   case 'rowgrouping':
-																			   checkers.push($.fn.rowGrouping());
+																			   checkers.push($.fn.rowGrouping);
 																			   sources.push(ams.baseURL + 'ext/jquery-dataTables-rowGrouping' + ams.devext + '.js');
 																			   break;
 																		   case 'rowreordering':