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What can I do now??Warning: Parameter 1 to modMainMenuHelper::buildXML() expected to be a reference. :p

Some days ago one of my sister's friend(novice web developer using Joomla or Wordpress ) sent a mail to me along with the subject what can I do now??And the content of her mail was only:

Warning: Parameter 1 to modMainMenuHelper::buildXML() expected to be a reference.
Warning: Parameter 1 to modMainMenuHelper::buildXML() expected to be a reference.
...... on line 143...

 Then I reply with only a line of text with no subject :


This is  occurred due the php version 5.3 and joomla is not certified to work with PHP 5.3.0.So,
You need to change some of your code in your files.

 Again she sent me a mail Hey man! It's also well known to me but where and in which file I have to modify?

Then I gave her this solution: Hello, Billy akhoali(cat's like eyes)!
you have to edit

../modules/mod_mainmenu/helper.php   [this is the file ]

function buildXML(&$params)      [this line has thrown you in trouble ]

just change it to 

function buildXML($params)

 Now save it And I wish your problem should be solved.

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