I don't know if its anything do do with it but you have an error here:
It should be:
[B] cycle: true[/B]
(removed the semi colon).
Also shouldn't the data-target point towards #collapse as you don't have #navbar?
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar">
I'll have a better look later when I get back as I am just nipping out.