Moved this to VirusScan as the best spot for it.
Your best bet is probably to ask Technical Support, link below, it's free by phone or online chat.
However first make sure that your system is absolutely and totally up to date in all regards, meaning it's Windows 7 SP1 and Internet Explorer is version 11.
You may not even use IE but McAfee does so it's important that it's up to date.
Also make sure that such things as Java, Adobe Reader, Shockwave and Flash players are up to date.
A question, have you been using any registry cleaners lately? These can often cause more trouble than they are worth.
If you have, see if it has a restore button.
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I forgot to also ask, do you have or did you have, any other anti-virus applications installed?
Have you tried to repair installation under VSE console -> Help?
Jose, this is the Home version, alas no repair function.