solve this error please

[eluser]ganesh_tavva[/eluser]
Iam using php 5.2.1
and ci version is 1.7.0

A PHP Error was encountered

Severity: Notice

Message: Undefined property: CI_Loader::$load

Filename: config/autoload.php

Line Number: 43

[eluser]murtuza54[/eluser]
in config/autoload.php

on line number 43

check
it should be

$autoload['libraries'] = array('library1','library2');