Adding LazyLoad and InfiniteScroll to WordPress Theme

Question

You need to add the callback function in the argument list as part of the function call, rather than as part of the argument object:

jQuery( infinite_scroll.contentSelector ).infinitescroll( 
    infinite_scroll, 
    function(){ addLazyLoad() }
);

You can remove the function(){ addLazyLoad()} that’s part of the infinite_scroll object (after "contentSelector":"#content #main"); it’s not going to do anything.