Index: branches/5.1.x/core/units/helpers/menu_helper.php
===================================================================
diff -u -N -r13951 -r13987
--- branches/5.1.x/core/units/helpers/menu_helper.php	(.../menu_helper.php)	(revision 13951)
+++ branches/5.1.x/core/units/helpers/menu_helper.php	(.../menu_helper.php)	(revision 13987)
@@ -114,7 +114,7 @@
 			static $root_path = null;
 
 			if (!$root_cat) {
-				$root_cat = $this->Application->ModuleInfo['Core']['RootCat'];
+				$root_cat = $this->Application->getBaseCategory();
 				$cache_key = 'parent_paths[%CIDSerial:' . $root_cat . '%]';
 				$root_path = $this->Application->getCache($cache_key);
 
@@ -176,7 +176,7 @@
 				$cat = $this_category->GetDBField('ParentId');
 			}
 			elseif ($cat == 0) {
-				$cat = $this->Application->ModuleInfo['Core']['RootCat'];
+				$cat = $this->Application->getBaseCategory();
 			}
 
 			return $cat;