RT 3.2.2 and Role-based permissions?

Hello. We have RT 3.2.2 running on a FreeBSD 5.3 box. RT
was installed via ports and upgraded from 3.0.12. I am
getting the following message:

RT could not load a valid user, and RT’s configuration
does >not allow for the creation of a new user for this
email >(requestor@example.domain.com).

You might need to grant ‘Everyone’ the right
’ReplyToTicket’ >for the
queue Web.

when a requestor replies to a ticket message. I have given
ReplyToTicket rights to the Requestor role, but apparently
this is not working. I don’t want to give ReplyToTicket
rights to everyone, just to the person who originally
requested the ticket. So what am I doing wrong?

P.S. This was working in previous version of RT - 3.0.12.

Viren Patel
Chemistry & Biochemistry
University of Texas at Austin