Phoca Gallery Image module - Cannot display multiple modules

[oxygen]

Hi there,
Thanks for a great component and modules.
I'm getting on OK learning what to do, but I have hit a problem (I hope I am not being stupid)
I have a website where I want to display 2 galleries in the Phoca Gallery Image modules on one page (using the JAK Lightbox).
So I have 2 categories in Phoca. I configure one gallery module to display "category 1" in the left column and the other to display "category 2" in the right column.
The problem is only the one in the left column works on this page. They both work individually (on separate pages) but put them on the same page and firebug gives an error:~

Error: optgjaksModPhocaGalleryRIMb49d8684 is not defined
Source file: http://www.thewebsite.co.uk/gallery

Has anyone come across this before and can it be fixed?
Thank you!

[Jan]

Hi, Phoca Gallery Image module is one instance module - so only one can be displayed on the site (or more in case not specific javascript methods will be used - because some of them need to identificate items on site with ID which is unique )

Jan

[oxygen]

Thanks Jan, much appreciated. I thought it might be something like that.