Hi Jan, your subject is a little bit misleading. I guess only the AthensTutorial is not working.
Because in 40316 Athens is working (at least for me). Try AthensDemoMorph example to verify in a fresh image from http://files.pharo.org/ (or downloaded via PharoLauncher) without installing anything additionally into the image. What might be broken is the (external loadable) Athens Tutorial which maybe out of sync because of new changes in current 4.0 development stream. As long as Pharo 4.0 is not yet released external packages may work or be broken. Try them in Pharo 3.0 to compare. Bye T.