Corporate 2, photoslide module problem

Hi all. I installed Gavick PhotoSlide, I added the slides, I came out of the module. when I go back to edit the slides in "your slides option" and I click "add new slide" nothing happens. My earlier slides are also not visible. Anyone know what's going on?

Template: Corporate 2, Module style: gk_corporate 2

link: http://www.domenyinwestycyjne.pl

Hi,

The site is currently offline so I can't take a look, if possible please PM me backend account then I will try to help you.

Thanks,

There is some problem with your content causing a javascript error when opening the module configuration page, I have attached a screenshot for you then you may know where the content comes from to change it, it maybe a problem of text format/encode or something, just change to another English string to check.