Isotope Gallery dont show big pictures

Hello,

i have create some Isotope Gallery´s. There works fine. But when i click on the small Thumbnails nothing happend. It shows only a black line in the middle. There shows no Mouse over effekt too.

In another thread about “Isotope Gallary” i have read following:
“Do you have LayerSlider plugin active? If you do, please try disabling LayerSlider and try again. Let me know if that worked for you.”

I try this and it worked fine. Clicking on Thumbnails will open the big pictures.

Problem is that i use the LayerSlider plugin on another site too so i need it avtive.
On Your Live Preview – Oblivion WP it will work too. Whats wrong.
I have installed the newes Template 3.9.5

Can you help me please?