How come you are not using the 2011 product? 2010 is almost obsolete. Do you get your software from a 3rd party vendor, ISP, Dell etc. ?
Yes you could try the SDAT but make sure it's from this website: http://www.mcafee.com/apps/downloads/security-updates/security-updates.aspx
If that fails then please contact Technical Support via the link under Useful Links at the top of this page. It's free by phone or online chat.