I have player on gumstix and intro from roboticsprimer on my desktop development computer.

I messed about with some ping and some net commands and now both gumstix and my development computer see each other and send messages. See the following dialog.
The Gui comes up for a second or two and then intro crashes

On Gumstix
# ./player roomba.cfg

* Part of the Player/Stage/Gazebo Project [http://playerstage.sourceforge.net].
* Copyright (C) 2000 - 2006 Brian Gerkey, Richard Vaughan, Andrew Howard,
* Nate Koenig, and contributors. Released under the GNU General Public License.
* Player comes with ABSOLUTELY NO WARRANTY.  This is free software, and you
* are welcome to redistribute it under certain conditions; see COPYING
* for details.

Opening connection to Roomba on /dev/ttyS2...Done.
Listening on ports: 6665
accepted client 0 on port 6665, fd 9
warning : Unhandled message for driver device=16777343:6665:4:0 type=3 subtype=2 len=1

warning : Unhandled message for driver device=16777343:6665:4:0 type=3 subtype=2 len=1

warning : other error on client 0
closing connection to client 0 on port 6665

in build computer

john@john-desktop:~/roboticsprimer-0.1/exercises/01_introduction/gumstix$ ./intro client.xml
Loading config file[client.xml]
Trying to connect to []
calling connect
ID Count[1]
Load Proxy[POSITION][0] Name[roomba]
Finished loading devices
playerc error   : got NACK from request
playerc error   : got NACK from request

If I dont plug gumstix into I create player immediately crashes. So I think I have, at least minimal, communications from build computer to gumstix to iCreate  and from
gumstix back to build computer.

I know player requires RPC and I am wondering what I have to do to configure RPC
I rried rpcinfo -p
and it said cant find portmapper
installed portmap, no change. From each system I can ping the other

Any Ideas?
1) How to configure RPC?
2) What player the messages mean? and wher I can find descriptions?
3) Why iCreate doesn't respond?

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