i cannot get pdfview to work. please help

I install pdfview, also tcpdf into pdfview folder aswell. I done the setting for tcpdf_config.php.

But I still got the message when I try to download the pdf file :

Warning: Unterminated comment starting line 912 in /home/freelylw/public_html/xxxxx.com/modules/pdfview/tcpdf/tcpdf.php on line 912

Parse error: syntax error, unexpected $end, expecting T_FUNCTION in /home/freelylw/public_html/xxxxxxx.com/modules/pdfview/tcpdf/tcpdf.php on line 912

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Here is my tcpdf_config.php file setting :

/**
* Installation path (/var/www/tcpdf/).
* By default it is automatically calculated but you can also set it as a fixed string to improve performances.
*/
define ("K_PATH_MAIN", "http://www.xxxxxx.com/modules/pdfview/tcpdf/");

// Automatic calculation for the following K_PATH_URL constant
if (isset($_SERVER["HTTP_HOST"]) AND (!empty($_SERVER["HTTP_HOST"]))) {
if(isset($_SERVER["HTTPS"]) AND (!empty($_SERVER["HTTPS"])) AND strtolower($_SERVER['HTTPS'])!='off') {
$k_path_url = "https://";
} else {
$k_path_url = "http://";
}
$k_path_url .= $_SERVER["HTTP_HOST"];
$k_path_url .= str_replace( '\\', '/', substr($_SERVER["PHP_SELF"], 0, -24));
}

/**
* URL path to tcpdf installation folder (http://localhost/tcpdf/).
* By default it is automatically calculated but you can also set it as a fixed string to improve performances..
*/
define ("K_PATH_URL", "http://www.xxxxxx.com/modules/pdfview/tcpdf/");

/**
* path for PDF fonts
* use K_PATH_MAIN."fonts/old/" for old non-UTF8 fonts
*/
define ("K_PATH_FONTS", K_PATH_MAIN."fonts/");

Can anybody tell me where's my problem and how can I fix this ? The pdf output is really important for me at the moment.

Thank you very much.