Broken Menu

I am using Twenty Eleven 1.3 and I had it set up perfectly with the menu bar below the header populated correctly with my menu.

I then tried Twenty Ten but it didn’t work correctly with my plugins i.e. Jigoshop, Participants Database etc so I changed back. The menu was then all over the place with items on the menu I didn’t want. it was unresponsive to changes so I deleted the menu1 (as I named it) and recreated it.

Now the panel on the left on the “appearance – menu” option does not list the “pages” only the “posts” so I cannot rebuild the menu.

How can I get the left hand panel back so I can repopulate the menu bar?