I would like to thank you for this wonderful “life saving” script. My issue with method 1 was: When I tried it in my template, the template loaded Mootools scripts in the header loop from my custom location (templates/scripts/mootools.js), and all my plugins are using Joomla Mootools (/media/system/js/mootools.js)
I wanted to “unset” my custom location, cause it was breaking my clients website (Kickstreet.com)

I modified the script and now, in the Header Loop it unsets my custom Mootools so pages load with only one version, clearing all my joomla page erors, see below:
—————————————

getHeadData(); // Get the current HEAD buffer
unset($header['scripts'][$this->baseurl . '/scripts/mootools.js']); // Clear templates custom MooTools
$this->setHeadData($header); // Update the HEAD buffer
?>

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DELETE ALL THIS ALSO!!!!!!!!!

————————————-
#
# <script type="text/javascript" src="templates/template ?>/js/mootools/mootools-1.2.1-core.js”>
# <script type="text/javascript" src="templates/template ?>/js/mootools/mootools-1.2-more.js”>
# <script type="text/javascript" src="templates/template ?>/js/mootools/mootools-1.2-compat.js”>
————————————-

Hope that helps..

< ?php
// no direct access
defined('_JEXEC') or die('Restricted access');
$template_baseurl = $this->baseurl . ‘/templates/’ . $this->template;
$header = $this->getHeadData();
unset ($header['scripts'][$this->baseurl . '/media/system/js/mootools.js']);
$this->setHeadData($header);
?>