Error starting omniNames....Invalid object reference error.

[JDS]

Hi:

I downloaded omniORB_303_x86_win32.zip, unzipped it: then downloaded
omniORBpy_1_3_x86_win32_python20.zip and unzipped it. Then I set the
paths as follows:
- set PATH=c:\winnt\system32;c:\omni\bin\x86_win32;c:\python2.0\;
- set PYTHONPATH=c:\omni\lib\python;c:\omni\lib\x86_win32;

When I type 
> omniNames -start
I get the following error on an NT4.0 windows machine:
omniORB: Configuration error: Invalid object reference supplied for
NameService
Failed to initialise the ORB. 

Another machine runs just fine. 

Q. I am unable to figure out what is different on the 2 machines and
why am I getting this error.

Any input will help.

Thanks,
jds.