cannot see pages when customizing?

I asked about this a while ago. I was told to check all my plugins. I did and nothing happened. I was not too worried asI don't update pages a lot.

However, I am having other issues now.
My basic feed validation isn't working with iTunes. I have been doing all I know to fix this? but what to do I don't know.

I fixed it a few weeks ago but on the blink again.
Is there something I am missing here. \

Newbie
Billy