Hi Loren,
Unfortunately I haven’t got the time at this moment to look into this. I have it noted down to look at though, so please bear with me.
I am, however, pretty sure it is to do with how your theme is layered. The way the parallax.js works is through z-layers. I have had to modify the z-layers to get it working consistently with the default wordpress themes (as these have to be the test bed). Now obviously not all themes are the same so I am planning on looking into how to make it more universal.
In the mean time, you could try playing around with the ordering of your <div> elements. What i’m pretty sure is happening is the image is being hidden behind your page. You should be able to confirm this by looking at the html markup.
If you need further assistance in the meantime, I can provide you with the details on where to modify the plugin to alter the z-order.
