diff --git a/build/error/core/Error.php b/build/error/core/Error.php
index 2cd3aa4..9d2d2d0 100755
--- a/build/error/core/Error.php
+++ b/build/error/core/Error.php
@@ -88,6 +88,7 @@
 				case Err::UnknownTemplate:     return $this->UnknownTemplate();     break;
 				case Err::UnknownAddress:      return $this->UnknownAddress();      break;
 				case Err::UnknownError:        return $this->UnknownError();        break;
+				case Err::AlreadyExists:       return $this->AlreadyExists();       break;
 
 				default:                       return $this->UnknownDebugError();   break;
 			}
@@ -179,6 +180,8 @@
 			return 'unknown';
 		}private function UnknownError(){
 			return 'unknown error';
+		}private function AlreadyExists(){
+			return 'item already exists';
 		}private function UnknownDebugError(){
 			return 'unknown debug error';
 		}