NattyWP Delicate Theme Pagination Issue

My mother’s site http://balancedwomensblog.com/ using NattyWP Delicate Theme,seems to have pagination problem when you try to go into page 2 of any “Search” results. Here is an example of error when I put “stones” in search bar – http://balancedwomensblog.com/page/2/?s=stones&op_x=44&op_y=14 no matter how many pages search result brings up you can’t go past page 1 w/o getting 404. From the research I’ve done it’s sound like something called a query_post pagination problem, but I’m not a developer. Can you tell me if there is anything I can do myself, or at the very least if there’s an answer I can pass on to my designer. Found item below doing search on forum, is this relevant?
http://stylizedweb.com/2008/08/13/query_posts-pagination-problem/

thank you, tanyajo