cant use samba-tool in samba-4.0.0_rc4

[ikox]

hello @all

I did a portage (emerge) install of samba-4.0.0_rc4 which worked, but now when I try to configure server and domain name i get an errror that a script called by samba-tool can't find libreplace.so
I googled elsewhere and found out that libreplace.so is installed by samba itself or by tdb - am I right?
I emerged both but im still missing this file.

Could anybody please help me? Im trying to set up an AD - server and followed this instructions till the error:
http://en.gentoo-wiki.com/wiki/Samba4_as_Active_Directory_Server

Thanks for every read or any help

ikox