This type of error sometimes happens with Google Chrome.

Have you tried downloading the PDF with Firefox?

Please make sure you have the latest version of Adobe Reader.
http://get.adobe.com/reader/?promoid=HRZAC

If the problem persists please email customer support at support@etrhelp.com with the following information:
-what browser you are using
-a screenshot of what you are seeing
-and does this only happen when you try to print documents, or all of the time?