ImportError: No module named _usrp_swig

GNU Radio
1

Hello all,
i installed the new version of gnuradio on a new computer i received
from collegues :-). Im working on ubuntu 9.04
The installation goes well and i installed all dependencies.
But when i tried to run the usrp_fft.py script, i get the following
error :

ls@ls-laptop:~/Desktop/gnuradio-3.2.2/gr-utils/src/python$ sudo
./usrp_fft.py
Traceback (most recent call last):
 File “./usrp_fft.py”, line 24, in
   from gnuradio import usrp
 File “/usr/lib/python2.6/dist-packages/gnuradio/usrp/init.py”,
line 25, in
  Â
 File “/usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py”,
line 6, in
ImportError: No module named _usrp_swig

I get the same error running some other script of gr-utils/src/python.
This is strange since i used the same configuration and settings i
allready used on another computer and everything went ok there…

Does
a1 know what’s going wrong and what i’ve missed?

Thanks

Sylv1