NextGEN Gallery won't work on one page in my site

I used the legacy thumbnails setting for most of the galleries in my new site (http://todddawsondesign.com/test/tdd-udesign) (see the portfolio pages).

When I tried to use the “Pro” options, the lightbox didn’t work, and I could only get enormous thumbnails (734px x 558px) on any and every setting I tried. And then I couldn’t even get the legacy thumbnail setting to work.

Please tell me what obvious thing I am overlooking. I have spent so much time on this and am so frustrated I’m ready to give up.

NextGEN Gallery v. 2.0.66.17
NextGEN Plus v. 1.0
WordPress v. 3.9.2
Problem page: http://todddawsondesign.com/test/tdd-udesign/sample-presentations/
Mac OS 10.9.4
Chrome Browser

https://wordpress.org/plugins/nextgen-gallery/