IonCube Loader Error after upgrade 4.5.0 to 4.5.1

Just ran the upgrade command from the web interface from 4.5.0 to 4.5.1 and now I have the following error " Script error: the ionCube Loader for PHP needs to be installed. The ionCube Loader is the industry standard PHP extension for running protected PHP code, and can usually be added easily to a PHP installation. For Loaders please visit get-loader.ioncube.com and for an instructional video please see http://ioncu.be/LV"

How do I resolve this?