Wp-cycle blank spot

I’m using wp-cycle for images on the front of my website at http://dandenong-ranges-photography.com.au/ but it keeps getting a blank spot. It didn’t used to. I changed the images I was using before for higher resolution ones. They are bigger than the size setting but according to the instructions for this plugin they are automatically sized down anyway. I’m at a loss as to why I’m getting a blank spot – unless I should have more images? I have 7 at the moment. The demo I saw I think only has 4 or 5 images so it can’t be that.

Any suggestions?