Create PDF Letter Not Working With Joomla 2.5.x

When trying to create a PDF letter using CiviCRM 4.1 on Joomla 2.5, Joomla returns a 500 error with the following message: Passed array does not specify a callable static method

This is apparently due to some changes in the Joomla autoloader. When googling the error, I found that the only matching results were error reports for a Joomla plugin called HTMLPurifier which was returning the same unique error. I eventually found a patched version of HTMLPurifier by Alessandro Pasotti here: http://www.itopen.it/2012/02/07/htmlpurifier-plugin-for-joomla-2-5/

I was able to incorporate his patch into joomla/administrator/components/com_civicrm/civicrm/CRM/Utils/PDF/Utils.php

This section:

require_once 'packages/dompdf/dompdf_config.inc.php';
spl_autoload_register('DOMPDF_autoload');

Was replaced with this:

//Below added in from HTML Purifier Patch
// ABP: Disable spl functions
if ($funcs = spl_autoload_functions()){
foreach($funcs as $func)

{ spl_autoload_unregister($func); }

}

require_once 'packages/dompdf/dompdf_config.inc.php';
spl_autoload_register('DOMPDF_autoload');

//This added in as well
// ABP: Re-enable spl functions
if ($funcs){
foreach($funcs as $func){
if(is_callable($func))

{ spl_autoload_register($func); }

}
// Re-register
// Import the library loader if necessary.
if (!class_exists('JLoader'))

{ require_once JPATH_PLATFORM . '/loader.php'; }

class_exists('JLoader') or die;
// Setup the autoloaders.
JLoader::setup();
// Import the cms loader if necessary.
if (!class_exists('JCmsLoader'))

{ require_once JPATH_PLATFORM.'/cms/cmsloader.php'; }

// Setup the autoloader.
JCmsLoader::setup();

}

I take no credit for the code. That should all go to Alessandro Pasotti.

I hope this helps.