Please see this topic at Lavasoft support forum http://www.lavasoftsupport.com/index.php?showtopic=7362 on how to solve the problem.
A McAfee user had the issue but was resolved.
While talking to the Mcafee technical support about about a problem installing an upgrade to my Security Center, they told me to uninstall Adaware and Spyware Blaster as it conflicts with Mcafee.
I hadn't noticed any problems and on a few occasions I have found that the support contradict themselves.
Can anyone shed any light on if this is true.