Quote Originally Posted by stellarweb View Post
Has anyone been able to get this mod to work on Zen Cart version 1.5.5?...
I have installed zen colorbox as part of Responsive Sheffield Blue template on zc 1.5.5 along with Image Handler 4.3.2
I encountered similar problem - main image would come up but no additional image next/previous. If I clicked on additional image within the product listing that image would come up as a small pop-up.

I noticed the includes/modules/additional image core files were different. I copied the file from my zc 1.5.4 site (also merged with IH 1.5.4 and a different responsive template that also uses colorbox). That worked.

I presume that there was some issue between new additional images file and either IH4 or ZenColorbox. I'm not an expert by any stretch. However, this hack is working for me and I haven't noted any problems. (touch wood).