Sorry, I can't see any code example, you need to escape with "backticks" like this code example.
I am not familiar with Joomla so I don't know what it does within modules. Generally Zenphoto is a standalone system and developed as such. We don't test inclusions with other CMS. If you uses the "zenphoto as a plugiN" way described on our site that might be because of Joomla. That way does not work with Wordpress anymore because they changed something.
So how do you include the Zenphoto functions to use them within Joomla? As said I am not familiar with Joomla so I don't know what the Jumi-an add on is or what it does (and seriously I have no time to investigate that, sorry).
Zenphoto did not change its basic functionality so maybe an update of Joomla or something is the cause.