What happens when you execute the failing query "select address_book_id,first_names ||','||line1 ||','||city as address from address_book where address_book_id=$address_id" directly in the database (using psql or sqlplus) ?
You might also find something useful in the server error log just before the first line of that error log that is put in there by the db driver but does not make it through to the web page error (which is just a tcl stack trace).
