[Plugin: NextGEN Gallery] Adding Effect creates second lightbox

Hello. I’m having a problem, wherein if I select Thickbox or Shutter in the effects panel, gallery thumbnails open up Thickbox or Shutter ON TOP of the default lightbox instead of replacing it. In other words, there are two lightboxes opening up on top of each other.

Any ideas on why this is happening and how to fix it?

Thanks,
Scott

https://www.ads-software.com/extend/plugins/nextgen-gallery/