I'm getting the same "Undefined variable: default" problem as areikiera. Although at this point it's written out five times above the "Content," Behavior," etc tabs, but it used to replace the navigation.
The difficulties with setting default make themselves known in other places too: my dropdowns do not respond to my checking another radio button. In fact, they don't seem to change at all after initially setting them.
Oh, and I'm not running on WAMP. I mean, it's Windows, Apache, MySQL, and PHP, but it isn't the WAMP package. (Did I just give myself away as the biggest newbie?)
Any help is greatly appreciated!