Shut down your computer and reboot. You may be experiencing a simple network problem. Wait a while and try again later. Contact your local systems administrator and describe the problem. When I open my document all of the pages are blank.
Documents remain on the Web for two weeks.
Try a different printer, one that isn't networked. Try saving the PDF to your hard drive. Shut down your computer and reboot. The problem with your network connection may be simply temporary. Wait a while and try again later.