[lazy79]

The Trunk is broken because there`s still a lot to do and to change / integrate (wordpress functions..); so it is just normal that the bbpress trunk is not installing.. (backpress..)

use the 0.9.02 Version.. and if using wordpress trunk, remember, wordpress changed its cookies so there is a problem in logging in with bbpress if its integrated. With WordPress Final there`s no problem with integration – bbpress will sure be updated soon (i hope) to use the new logged_in cookie from wordpress.