[gentoo-user] openssh-7.1_p1-r2 won't allow "nxserver" to connect [continued]

[Bill Damage]

I have exactly the same problem mentioned in this thread. I think something changed and broke the authentication during an update. i found this message by Googling and just joined the mail list to ask for help. I have done everything mentioned in the thread, and here's where I'm at: (it worked fine before some regular update broke it)
Thanks!
[root@tiger ssh]# nxsetup --test
----> Testing your nxserver configuration ...Warning: Invalid value "APPLICATION_LIBRARY_PRELOAD=/usr/lib64/nx/libX11.so.6:/usr/lib64/nx/libXext.so.6:/usr/lib64/nx/libXcomp.so.3:/usr/lib64/nx/libXcompext.so.3:/usr/lib64/nx/libXrender.so.1". /usr/lib64/nx/libX11.so.6 could not be found. Users will not be able to run a single application in non-rootless mode.Warning: Invalid value "COMMAND_START_CDE=cdwm"         Users will not be able to request a CDE session.Warning: Invalid value "COMMAND_SMBMOUNT=smbmount". You'll not be able to use SAMBA.Warning: Invalid value "COMMAND_SMBUMOUNT=smbumount". You'll not be able to use SAMBA.Warning: Invalid cupsd version of "/usr/sbin/cupsd". Need version 1.2.         Users will not be able to enable printing. Ignore if you use cups > 1.2Error: Could not find 1.5.0 or 2.[01].0 or 3.[012345].0 version string in nxagent. NX 1.5.0 or 2.[01].0 or 3.[012345].0 backend is needed for this version of FreeNX.
  Warnings occured during config check.  To enable these features please correct the configuration file.
<---- done
----> Testing your nxserver connection ...Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).Fatal error: Could not connect to NX Server.
Please check your ssh setup:
The following are _examples_ of what you might need to check.
        - Make sure "nx" is one of the AllowUsers in sshd_config.    (or that the line is outcommented/not there)        - Make sure "nx" is one of the AllowGroups in sshd_config.    (or that the line is outcommented/not there)        - Make sure your sshd allows public key authentication.        - Make sure your sshd is really running on port 22.        - Make sure your sshd_config AuthorizedKeysFile in sshd_config is set to authorized_keys.    (this should be a filename not a pathname+filename)  - Make sure you allow ssh on localhost, this could come from some    restriction of:      -the tcp wrapper. Then add in /etc/hosts.allow: ALL:localhost      -the iptables. add to it:         $ iptables -A INPUT  -i lo -j ACCEPT         $ iptables -A OUTPUT -o lo -j ACCEPT[root@tiger ssh]#