Error while printing invoice

This an incompatibility issue between PHP Version 5.4.4 and zend Framwork .

Fixed it by change in this function lib/Zend/Pdf/FileParserDataSource.php.

change

abstract public function __construct();

abstract public function __construct($filePath);

Magento in versions before CE 1.9 / EE 1.14 is not compatible with PHP 5.4 out of the box, which causes this error.

Anyways, there is an official patch for this.

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