Cant access NZB's

Hi Everyone,
just wondered if anyone could assist me with a problem that started today?
everything worked ok last last, could view NZb files and download them no probs, now when i go to view the particular nzb i get this message
" kennyc, you do not have permission to access this page. This could be due to one of several reasons:

Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.
If you are trying to use the BitTorrent Invites Section read here.

does anyone know why this is or how i can get back to how things were yesterday?

Cheers Everyone!

sorry guys.... just me being stoopid... it was 1 nzb in particular that was messing around...dont know why...cheers anyway!