ImportError: cannot import name usrp

Hello,

I have a gnuradio problem that appears when trying to test with the
following:
./usrp_benchmark_usb.py
./test_usrp_standard_tx
./test_usrp_standard_rx
./lsusrp
In all cases, the returned error includes the same relevant
information. ./lsusrp output shown here as an example:

Traceback (most recent call last):
File “./lsusrp”, line 25, in
from gnuradio import usrp
ImportError: cannot import name usrp

System:
Linux uspr01 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25
17:13:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Hardware: Ettus R. USRP1 with 2 RFX1800 daughtercards and 52MHz
clock

GnuRadio 3.4.2 (to get usrp support…goal is OpenBTS).

Build Manual:
http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall

Suggestions?

FYI, I am new to Linux, USRP, GNU*, etc.

Derek