none of the buttons work

[oren]

rails 2.3.8, ruby 1.8.7
i created a user, i see the tree page and it's empty.
none of the button above is doing anything - add domain, add page, add text..etc

here is my log:
Rendering tree/children
Element Load (0.2ms) SELECT * FROM "elements" WHERE ("elements"."ancestry" IS NULL) ORDER BY ancestry ASC
Completed in 25ms (View: 1, DB: 2) | 200 OK [http://0.0.0.0/tree/children?id=]

any ideas?