Strange url after voting

-- url of the page with the problem -- : www.kaakfahnen.de
-- HikaShop version -- : 2.4.0
-- Joomla version -- : 3.4.0
-- PHP version -- : 5.5
-- Browser(s) name and version -- : all
-- Error-message(debug-mod must be tuned on) -- : -

When you vote on this product:

www.kaakfahnen.de/product/23674-fahnenma...-lampen-6-meter.html

you are leaded to a strange url:

www.kaakfahnen.dehttp//www.kaakfahnen.de...-lampen-6-meter.html

Jan

The problem is still there. The slash after www.kaakfahnen.de is gone!

www.kaakfahnen.deproduct/23674-fahnenmas...-lampen-6-meter.html

I tried the same without htaccess, but the problem is also there.

Jan

That seems to be the solution.

Thanks

Jan