Hi, my header menu disappeared on the calendar page, too. I had not gotten very far in developing my website, so I uninstalled WordPress from my InMotion web hosting cPanel.
I reinstalled WordPress the same way with one exception. I checked the “Enable Multisite (WPMU)” box.
“This feature will Enable Multisite option for your WordPress blog.
Your server must support Apache mod_rewrite to use this feature.”
I’m just a newbie, so I don’t know if this did the trick, or if it was just a matter of clearing the mess I had made and reinstalling WordPress.
