Re: Newsletter/ email error
What you appear to have is a mis-match between your database version and your fileset version. (What version info do you see when you go to Admin > Tools > Server Info ?)
You claim to be running v1.3.0.1, but the sql query string you are having problems with was only added to the database in v1.3.0.2
The function parsed_query_string($read_string) in includes/functions/audience.php was also modified in v1.3.0.2 to work with that sql query.
The version of that function file in your store hasn't been modified to work with that sql query string.
You're well overdue for a version upgrade...
Neville
An assumption is what you arrive at when you get tired of thinking...