How are you opening the document? After installing the CPDS Viewer, when I access courseware PDF documents they open directly in Adobe Acrobat Reader where I can print just fine. An extra bar is displayed across the top right like this:

(Sorry for the cell phone screenshot, couldn't take a screen capture for obvious reasons)
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Second Edition of my "Max Power" Firewall Book
Now Available at http://www.maxpowerfirewalls.com
Attend my online "Be your Own TAC: Part Deux" CheckMates event
March 27th with sessions for both the EMEA and Americas time zones