I have installed Koha 2.2.9 and have set one year as the Enrolment Period value in all borrowers in the Borrower Categories parameter. I then use Patrons/Add New Patron ( cgi-bin/koha/members/memberentry.pl ) to enter a new patron, leaving Expiry Date blank and setting a patron category. According to the documentation, the expiry date should be automatically calculated to one year after joining. However when I then display the patron details, neither date (registration, expiry) is displayed. If I attempt to issue an item to that patron I get the message "Patron's card is expired" (indicating date is null?). Why isn't the date calculated and inserted? What else must I do? If instead I want to enter the date, what formats are valid? None I have used achieve entry and display of the date. Many thanks, Opal