Slideshow not showing – blank page

Hello, I’ve tried searching for this answer in another thread, but can’t seem to find it, by googling either, so I’m hoping I can get some help.
When I go to Add Next Gen Gallery, if I want to add it as a Slideshow gallery, it’s not working. It just creates a blank page.
“Show as Image List” and “Show as Imagebrowser” are both working perfectly, but the “Show as Slideshow” isn’t.

I’m fully up to date on my NextGen plug in and my WordPress theme, and I have no other plug ins that are interfering. My eyes are burning, I can’t search for answers anymore lol. Please help!

Thank you thank you!!!

http://wordpress.org/extend/plugins/nextgen-gallery/