After upgraded my store to 184.108.40.206, I cannot print invoices.
The error is: "There are no printable documents related to selected orders."
My webserver is Apache 2.4, PHP 5.5, suPHP
You need to do modification into this file.
Open: /lib/Zend/Pdf/FileParserDataSource.php and comment out:
//abstract public function __construct(); //abstract public function __destruct();
This is becased by a compatibility issue with PHP 5.4.