windows cannot access the specified device

Hello,
I’m new with the COMODO; hence not much familiar with the apps.
I just installed the latest version. Using Windows XP Fully updated + IE7.

Each time i download a file, i got the follwoing error:

windows cannot access the specified device, path or file. you may not have the appropriate permission to access the item.

I have full admin rights on the PC and on all folders…

i notice that whenever i disable the Defense+, system works fine. tought to create a rule but still, i cannnot create a rule for each file or extension i have to download…

Thnaks,
http://img294.imageshack.us/img294/8049/25526704sq4.jpg

wierd…
Are you running D+ in custom policy mode?

No… i’m running it in clean pc mode…