As you've added support for normal user to automatically insert breadcrumb in Genesis child theme and framework, it's good until you want to place it manually.
I have to manually remove the following lines (Line : 357, 358)
/* Genesis */ remove_action( 'genesis_before_loop', 'genesis_do_breadcrumbs' ); add_action( 'genesis_before_loop', 'rdfa_breadcrumb' );
Please add a check box to select manual placement to resolve above issue.
Also, when I left "Breadcrumb Seperator" field empty, it automatically inserts '/' (Slash). I don't think user wants that.
I've modified Line 61 to get the expected results.
Please fix this issue. BTW Quiet nice plugin.