Revert CI_DB_result to a regular class It's directly instantiated for cached database results
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
index 37c50e5..04f964f 100644
--- a/system/database/DB_result.php
+++ b/system/database/DB_result.php
@@ -36,7 +36,7 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  */
-abstract class CI_DB_result {
+class CI_DB_result {
 
 	public $conn_id				= NULL;
 	public $result_id			= NULL;