[FreeNX-kNX] NX not working behind nat: "Error: Failure negotiating the session in stage '10'."

[Rod Morison]

Fabian Franz wrote:
>> Info: Connection with remote proxy established.
>> Info: Synchronizing local and remote caches.
>> Error: The remote NX proxy closed the connection.
>> Error: Failure negotiating the session in stage '10'.
>>     
>
> This means synchronization somewhere goes wrong.
>
> Have never seen that before ...
>
> Consider removing all .nx directories/files on all clients and servers and try again.
>   
I've tried several client computers, and cleared out .nx directories 
several times, exact same result.

Has anyone built a debug version and tried to run nxproxy under gdb? I 
find the nomachines build from source docs a little hard to follow. Does 
anyone have instructions on running the server side "by hand" with the 
nomachines windows client on the other side?