I've upgraded the loyalty program module to 1.10 and it now doesn't work at all.
When you choose a category and save, it responds with the error "you have to select at least one category" even if you have selected them all.
Others are also reporting the issue - http://www.prestashop.com/forums/topic/307567-loyalty-program-110-doesnt-work/?hl=%2Bloyalty&do=findComment&comment=1558199
This needs a quick resolution.
Thanks.
Karl