Help with the Main screen Slideshow Extras add in

Can't work out 2 things. One how to get the effects working. It only does the slide picture effect no matter what you choose and how do you change the images from default Flowers. I got hopelessly lost there and couldn't even get the flowers back. Ended up going through the whole Greenpois0n jailbreak thing again.

I have the flowers also.  No slide show.