[FreeNX-kNX] Error trying to start nxserver

[Laura Thurber]

I have just installed freenx according to these instructions: http://ltsp.criticalcontrol.com/freenx.html.
Everything appeared to work fine, with the exception that when I try to start the server I get these messages:

#./nxserver --status
NX> 100 NXSERVER -Version 1.4.0-02 OS_(GPL)
NX> 110 NX Server is stopped
NX> 999 Bye
#./nxserver --start
NX> 100 NXSERVER -Version 1.4.0-02 OS_(GPL)
mv: cannot stat `/usr/NX/home/nx/.ssh/authorized_keys2.disabled': No such file or directory
NX> 122 Service started
NX> 999 Bye
#./nxserver --status
NX> 100 NXSERVER -Version 1.4.0-02 OS_(GPL)
NX> 110 NX Server is stopped
NX> 999 Bye

I have checked, and the authorized_keys file is not there, and locate reports that a file like that is nowhere on my system.  
Did I miss a step?

Thanks very much in advance!
-Laura