Responsive tinynav Menu not woring

Hey Guys! loving the theme but having a problem with the menu not going to the drop down menu when the max-width: 767px ccs rule gets applied. looks like the tinynav select elements are not being generated and/or inserted. I did e a work around by changing the #branding ul.menu, #colophon #access-footer ul.menu, #access-secondary { display: none; } rule and made it display: block; works for now but still is their something I need to do to get the tinynav feature working?