Additional image not displaying on pop up

Hi All,

This is my second ZC site, I am having an issue with additional image not displaying (popping) when selected, I have tried every combination of file naming conventions!:frusty:
When comparing hyperlink information on my other site (which additional images work) when hovering over the small image it seems to be looking for different code instead of the image directory, this leads me to believe there may be an issue within the code, can anyone suggest where?

http://www.urbangirl.com.au/index.php?main_page=product_info&cPath=81&products_id=331

"BIRDS PARADISE"
Are you using the html escape characters for the quotes??

I am not using quotes in the naming of the image files, it is only the product title that has the quotes
Image naming conventions:
BIRDS PARADISE.jpg
BIRDS PARADISE_01.jpg

I see that your additional image is displaying now

Image naming conventions:
BIRDS PARADISE.jpg
BIRDS PARADISE_01.jpg
If you are on a linux server you should be using all lower case and no spaces or special characters
Similar to

birds_paradise.jpg
birds_paradise_01.jpg 

This should be edited and html escape characters used for the quotes

BARDOT "BIRDS PARADISE" SKIRT