http://stackoverflow.com/questions/17022829/magento-blank-empty-page-whene-printing-invoice-on-backendIf you moved to a server with PHP 5.4, you might get blank invoices from your admin when using the Print Invoice button.
If you Googled this, you probably found yet another StackOverflow link – http://stackoverflow.com/questions/17022829/magento-blank-empty-page-whene-printing-invoice-on-backend
From the above link:
Make a core override:
Copy – [magento root]/lib/Zend/Pdf/FileParserDataSource.php
To – [magento root]/app/code/local/Zend/Pdf/FileParserDataSource.php
Fixed it by commenting out __construct() and __destruct() methods in lib/Zend/Pdf/FileParserDataSource.php
// abstract public function __construct();
* Object destructor. Closes the data source.
* May also perform cleanup tasks such as deleting temporary files.
// abstract public function __destruct();
Then clear Magento cache and test.
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