Error Deleting Cookies

Hi...have been using Ewido 4.0 demo mode.
Problem trying to delete cookies found following scan
(fast and complete scans same), states error while deleting.
Any ideas

Great program and has successfully deleted a trojan and I would like to upgrade to full version protection but want to sort this error first.

Specs -
Ewido Anti-Spy 4.0, XP, Orange broadband, AVG Free AV (scan with Kaspersky AV) + Kaspersky Firewall, WinPatrol 10, CCleaner, Lavasoft Adaware SE.

 

thanks for reply, am using Mozilla Firefox.

Did a couple of further scans and they are the same cookies .

Also saved a scan log and noticed that these cookies are all in System Mechanic 6 folder (C:\Program Files\iolo\System Mechanic Professional 6\Undo\Manual).

I backed up and deleted the contents of this file manually and did a further scan which showed them up in a backup file i had made on a second drive.

Assume there is a conflict with this program and have to clear separately ?