Thanks for the fast reply, Jackie! :)
I have zc 1.5.1 and installed version for 1.5. I believe I made all needed uploads / merged changes. I've double checked catalog side canges. I'm using Hope template and replaced YOUR_TEMPLATE to that template folder name.

I tested this module on my test store that is 1.5.1 without any mods installed. I Copied files from 1.5 folder and it worked after I had copied template files to classic and templare_default folders.