Hi Folks,
I came in late on this thread, but I loaded the example that you mentioned and my debugger instantly had an issue with it, though of course, it didn't tell me what it didn't like. I do see a bunch of javascript in there that doesn't make sense to me. I haven't played around too much with Javascript and Zencart, but I imagine it is possible that some of this troulbe could be there.
My debugger failed on line 344 with the following segment of code:
Code:
Cleverly, the LEDs are user replaceable, as are the <a class="inline" onclick="function onclick(event) {sndReq("./content/_uni/products.php?cat=lightheads&products=wilma§ion=lens"); }">lenses</a>
Looking at the page itself, that link doesn't show up. I don't know that htis is your problem, but script errors on the preview page could cause the update script to not function.
Good luck.