Image Show GK4 Problem

I have installed Boutique template and tried to change or add the images to Image Show GK4, but when I click select images for a slide, the screen goes dark, but modal window never pops up. I uninstalled, downloaded and installed it back, but the result was the same. Now, I cannot assign the image path manually, I cannot upload images, so the module became useless all together.
Please help!

Hi

Please try update the module and let me know if problem still exists.