J-BusinessDirectory - Catalog view won't show anything after letter 'S'

There are plenty of entries from T through Z, but they won't show via the Catalog type view. Any clues?

http://www.laurinburgchamber.com/membership/business-search/catalog?letter=A

v 3.6.4

Hi Philippe, 

Please send us your Joomla login details via the the contact form and we'll have a look.