Hi people.
I seem to have fallen at the final hurdle, and despite two days of searching
cannot find an answer.
All has gone well with the build on vmware player/ubuntu 16.04lts have set
up a couple of other VMs and have a laptop on the home network as well, all
connections are configured in guac and show up in tomcat, login at that
point is all ok (only going for rdp at the moment) but.. clicking on any of
the connections throws up this 

"An internal error has occurred within the Guacamole server, and the
connection has been terminated. If the problem persists, please notify your
system administrator, or check your system logs"

only mention in logs is in catalina.out 
15:58:54.876 [http-nio-8080-exec-8] WARN 
o.a.g.a.f.FileAuthenticationProvider - The "basic-user-mapping" property is
deprecated. Please use the "GUACAMOLE_HOME/user-mapping.xml$
15:58:58.240 [http-nio-8080-exec-3] ERROR
o.a.g.w.GuacamoleWebSocketTunnelEndpoint - Creation of WebSocket tunnel to
guacd failed: java.net.UnknownHostException: localhost guacd$
15:58:58.344 [http-nio-8080-exec-2] ERROR o.a.g.s.GuacamoleHTTPTunnelServlet
- HTTP tunnel request failed: java.net.UnknownHostException: localhost
guacd-port: 4822

i have created the user-mapping.xml as the 3 connections and login to the
guac page are all ok am assuming no probs there, the guacd is reporting it
is starting ok and is listening on the localhost correct port (4822)
pinging local host goes ok so loopback is intact
I have disabled the firewall just to keep it out of the way until everything
checks out.
I should mention i plumped for latest 9.05 tomcat, seemed a good idea at the
time :)

am able to rdp using windows util to target win10VM, so it seems the problem
is either between tomcat and guacapp or between guacapp and guacd, anyone
any ideas on narrowing issue further?

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