Bbn code error

i’m using fedora10 and i have insalled from cgran the bbn code (usrp2
version ) and when i run the example i have this problem

[root@m examples]# ./
Traceback (most recent call last):
 File “./”, line 35, in
   from bbn_80211b_pkt import *
“/home/maher/usrp2_version/gr-bbn/src/examples/”, line
32, in
   from gnuradio import bbn
ImportError: cannot import name bbn

i tried to fix this by adding
#include <string.h>
at the top of and
but the error still