There must be remannts of the original software still on the machine.
Uninstall everything 'McAfee' in the Control Panel > Programs > Uninstall a Program (Add or Remove Programs in XP)
As a rule, whenever changing from one suite to another, or from a trial to a full version, it's wise to do a complete cleanup.
Run the MCPR Cleanup Tool listed under Useful Links at the top of this page.
Reboot and reinstall from your online account.
Thank you for your reply. Now i am trying your advice.
I need some time to see the results.(20 days or more.). i will write here for results.
Thank you again.
OK good luck.