[support] problem creating "Basic page"

Dear List,

I Installed 7.0; tweaked it a little (added modules and themes).

Now I can not create basic pages anymore, on /node/add I get:

You have not created any content types yet. Go to the content type creation page to add a new content type.

But when I go to /admin/structure/types I see two types (Basic page and Book page).

When I create a new content type and hit /node/add I am immediately redirected to create a page of this new type. When I create two new types I get a choice of just these two new types.

Is there some setting I accidentally flipped that blocks those two page types from being created?

I looked at my permission, I am an administrator and have all permissions checked...

Any ideas? Thanks...

-Tom

P.S. I found http://drupal.org/node/934956 and http://drupal.org/node/550254which seem to be related, but the suggested patches do not make sense on my Drupal 7.0 source.