Invalid address: Bladerbare PDF maken

-- url of the page with the problem -- : bladerbarepdfmaken.nl/
-- HikaShop version -- : 2.6.2.
-- Joomla version -- : 3.5.1
-- PHP version -- : all
-- Browser(s) name and version -- : all
-- Error-message(debug-mod must be tuned on) -- : Invalid address: Bladerbare PDF maken

www.bladerbarepdfmaken.nl/bestel-snel-on...ask-step/step-1.html

After update to Joomla 3.5.1 its not possible to go to the payment.

Its with all sites!!!


Jan