Add an image / add media icons not there

I’m running WordPress 2.7 beta 3, and when I want to make a new post, I see the write box. The problem is, I don’t see any icons for Add an image, Add media and such above the writebox. If I click on ‘Toggle fullscreen mode’ I see the icons, but they’re greyed out. I had the same problem with previous betas of 2.7.

http://www.zzillezz.net/wpscreen1.png
http://www.zzillezz.net/wpscreen2.png

Any an idea to solve this? Thanks