There was an extra = sign in this file
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 2fb70ac..0c2e499 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -1,4 +1,4 @@
-=<?php
+<?php
 /**
  * CodeIgniter
  *