Index: trunk/core/kernel/processors/tag_processor.php
===================================================================
diff -u -N -r4199 -r4607
--- trunk/core/kernel/processors/tag_processor.php	(.../tag_processor.php)	(revision 4199)
+++ trunk/core/kernel/processors/tag_processor.php	(.../tag_processor.php)	(revision 4607)
@@ -71,7 +71,7 @@
 					}
 					trigger_error('Tag <b>'.$Method.'</b> Undefined in '.get_class($this).'[Agregated Tag]:<br><b>'.$tag.'</b>', E_USER_WARNING);
 				}
-				trigger_error('Tag Undefined:<br><b>'.$tag.'</b>',E_USER_WARNING);
+				trigger_error('Tag Undefined:<br><b>'.$prefix.':'.$tag.'</b>',E_USER_WARNING);
 				return false;
 			}
 		}