Custom Wordpress Site needs fixing - PHP Expert required

I have an art site ([login to view URL]) and parts of it were custom built. Currently, when you click on a painting in my gallery, you are suppose to be taken to a detailed view of that painting and on that page is a series of info that relates to the work. The site worked fine up until I got a SSL certificate (for selling my work) and also when I changed the category where the paintings are stored. The original category was called "gallery" and I changed it to "paintings".. Once I did, everything seem to get broken... I tried changing it back, but something isn't working. I need a PHP Expert who KNOWS wordpress to fix this bug.. ## Deliverables Please be a PHP expert. I need this fixed very quickly and I believe for the right coder, this is a simple bug fix that will be quick work for a quick buck.