diff --git a/Doctrine/Table/Exception.php b/Doctrine/Table/Exception.php
new file mode 100644
index 000000000..aa7d06556
--- /dev/null
+++ b/Doctrine/Table/Exception.php
@@ -0,0 +1,14 @@
+<?php
+require_once(Doctrine::getPath().DIRECTORY_SEPARATOR."Exception.php");
+/**
+ * thrown when user tries to initialize a new instance of Doctrine_Table, 
+ * while there already exists an instance of that table
+ */
+class Doctrine_Table_Exception extends Doctrine_Exception {
+    public function __construct() {
+        parent::__construct("Couldn't initialize table. One instance of this
+                            tabke already exists. Always use Doctrine_Session::getTable(\$name)
+                            to get on instance of a Doctrine_Table.",Doctrine::ERR_TABLE_INSTANCE);
+    }
+}
+?>