Delicacy not working well in WordPress 3.6

I’m actually just trying to set up my blog. I LOVE this theme and really want to use it. However the nivo slider is not showing any of my images from posts. Also, I am not getting any thumbnails for each post on the home page. Is it just an issue with 3.6? Does this theme need to be updated for it? Or just wait for another WordPress update? Glad to pay the full price for it if I’m sure it will work in 3.6. Please let me know.