Sorry for your frustration, please be informed that we still have an option to recover the contents that were in your password vault after the upgrade. Please follow the steps here
Please provide us the following details about your computer so that would be helpful to us is assisting you with the scan error
What is the operating system of the computer?
Do you have any other security software installed in the computer ?
What is the default browser that you use ? (Internet explorer/Mozilla firefox/Any other )
Please get back to us with the above information , we are here to help you.
McAfee Online Community Moderator