[FreeNX-kNX] FreeNX server trying to write to wrong directory?

[Morris Jones]

I'm running Ubuntu Maverick on a laptop and a desktop.  On trying to 
connect from the laptop to the desktop, I get this error in the session 
file:

NXAGENT - Version 3.5.0

Copyright (C) 2001, 2011 NoMachine.
See http://www.nomachine.com/ for more information.

Info: Agent running with pid '13993'.
Session: Starting session at 'Sun Jun 12 07:33:29 2011'.
Loop: PANIC! Can't create directory 
'/usr/NX/.nx/C-mojo-desktop-2001-7F1847F630C70C1CF3ADBB17B932280
D. Error is 13 'Permission denied'.
Error: Can't create directory 
'/usr/NX/.nx/C-mojo-desktop-2001-7F1847F630C70C1CF3ADBB17B932280D. Err
or is 13 'Permission denied'.
Loop: PANIC! Cannot determine directory of NX session file.
Error: Cannot determine directory of NX session file.
Session: Session terminated at 'Sun Jun 12 07:33:29 2011'.

Any thoughts on what might be happening here?  Do I have a mixed up 
version problem?  The /usr/NX tree is owned by root.  I tried changing 
the ownership to "nx" with the same result.

Cheers,
Mojo
-- 
Morris Jones, Monrovia, CA
http://bridgemojo.com
http://otastro.org
http://mojo.whiteoaks.com