Well I'll give you a few things to try in order...hopefully one will fix the issue..
Try running the McAfee Virtual Technician and tell it to fix errors, post the session ID number here too so I can ask about it elsewhere.
Secondly you could try this:
1. Uninstall all McAfee programs through "Add or Remove Programs" in Windows "Control Panel".
2. Use the MCPR tool, see this article: How to remove supported McAfee consumer products using the McAfee Consumer Products Removal tool (MCPR.exe). This will remove all McAfee remnants from your computer. (You must have Windows 7, Vista, XP or 2000, SP4 to use this tool)
3. Launch Windows Explorer and delete all McAfee files in "Program Files" but especially in "C:\Document and Settings\<user>\Application Data" and "C:\Document and Settings\All Users\Application Data". You have to set Windows Explorer to show all hidden files and folders (Tools > Folder Options > View tab). Just delete the McAfee folders even if they are empty in all the "Application Data" folders. Can be more than one!
In Vista: C:\Program Files, C:\ProgramData and C:\Users\yourname\AppData\Roaming
If you can't find these files don't worry. It just means that MCPR has done its job.
4. Reboot and redownload/reinstall your McAfee products directly from your account at the McAfee web site.
If you are McAfee direct customer, go to https://home.mcafee.com/Secure/Protected/Login.aspx and log in to download your McAfee products.
If you received your McAfee products from your service provider, please use the list below to download your software.
AT&T users should go to https://uversecentral1.att.com/uvp/myhome/mam/ISS/
Comcast users should consult their download page as their protection products have changed brands. See THIS page.
Cox users should go to http://www.cox.net and log in to download your software.
DELL users should go to https://us.mcafee.com/root/login.asp?affid=105 and log in to download your software.
Gateway users should go to https://us.mcafee.com/root/login.asp?affid=370 and log in to download your software.
eMachines users should go to https://us.mcafee.com/root/login.asp?affid=365 and log in to download your software.
MSN users should go to http://membercenter.msn.com/ and log in to download your software.
AOL users should go to http://daol.aol.com/security/ and log in to download your software.
If all that fails to cure it then contact Technical Support Chat linked through "Useful Links" at the top of this page.
You will have to run the Virtual Technician again if you have closed the previous session.