Check these files to see if the 6.1.8 changes were made: admin_XXX\skins\default\js\admin.js line 72 "matrix_include" == c ? h.attr("name", "option_add[" + c + "][" + options_added + "]") : "set_enabled" == c ? (h.removeAttr("disabled"), h.attr("checked", "checked"), h.parent().addClass("selected"), h.val(1), 1 == d && (h.parent().addClass("selected"), h.attr("checked", "checked")), h.attr("name", "option_add[" + c + "][" + options_added + "]")) : "default" == c || "