HELP! Error 500 when I try to edit customer groups... in Configuring and using PrestaShop Posted August 25, 2016 very strange... When I try to edti a customer group, the screen goes white, and I get a 500 error. The same error when I try to ADD a group... it´s the ONLY situation when I get this 500... any ideas? how can I solve this? I´m using PS 18.104.22.168 Thanks!