Установка Joomla не проходит первый шаг - Joomla 3.x: Установка, обновление и настройка

[Thu Jan 08 14:28:41 2015] [error] [client 5.166.81.68] PHP Warning:  preg_replace_callback(): Requires argument 2, '', to be a valid callback in /var/www/aisapp/data/www/avtoledy.aisapp.ru/libraries/joomla/filter/input.php on line 726, referer: http://avtoledy.aisapp.ru/installation/index.php
[Thu Jan 08 14:28:41 2015] [error] [client 5.166.81.68] PHP Warning:  preg_replace_callback(): Requires argument 2, '', to be a valid callback in /var/www/aisapp/data/www/avtoledy.aisapp.ru/libraries/joomla/filter/input.php on line 719, referer: http://avtoledy.aisapp.ru/installation/index.php
[Thu Jan 08 14:28:41 2015] [error] [client 5.166.81.68] PHP Fatal error:  Allowed memory size of 536870912 bytes exhausted (tried to allocate 1841492793 bytes) in /var/www/aisapp/data/www/avtoledy.aisapp.ru/libraries/joomla/filter/input.php on line 726, referer: http://avtoledy.aisapp.ru/installation/index.php

protected function _decode($source)
	{
		static $ttr;
		if (!is_array($ttr))
		{
			// Entity decode
			if (version_compare(PHP_VERSION, '5.3.4', '>='))
			{
				$trans_tbl = get_html_translation_table(HTML_ENTITIES, ENT_COMPAT);
			}
			else
			{
				$trans_tbl = get_html_translation_table(HTML_ENTITIES, ENT_COMPAT);
			}

			foreach ($trans_tbl as $k => $v)
			{
				$ttr[$v] = utf8_encode($k);
			}
		}

		$source = strtr($source, $ttr);

		// Convert decimal
		$source = preg_replace_callback('/&#(\d+);/m', function($m)
		{
			return utf8_encode(chr($m[1]));
		}, $source
		);

		// Convert hex
		$source = preg_replace_callback('/&#x([a-f0-9]+);/mi', function($m)
		{
			return utf8_encode(chr('0x' . $m[1]));
		}, $source
		);

		return $source;
	}