Wow. That is weird!
When you asked me to install System ARI Lightbox, I thought I did that?!
Also - the address that you had access to is a copy of the site, from my local installation.
So when I wanted to do the same thing, locally - I checked and found System ARI Lightbox installed and activated. - But the lightbox did not work... odd?!!
I have made a copy of the site that you had access to, and installed it locally, so now it works.
However, I am a little uncomfortable not knowing what went wrong for me. It is bound to happen again, then...
I must be looking in the wrong place?! (but why do I find the correct name, then?)
Anyway - thank you very much.