service does not exist - app_manager rapp, hydro, python, turtlebot

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I am using the app_manager and three rapps. In one, the navigate rapp, I get this message when I try to use a service of my own.

[ERROR] [WallTime: 1394827317.221882] [Client 0] [id: call_service:/app_manager/application/load_map_db:7] call_service InvalidServiceException: Service /app_manager/application/load_map_db does not exist

why would the app manager tell me that this is non existant? I am running hydro on a ubuntu 12.04 system. I'm pretty sure it's there, in the srv folder there's a MapPublish.srv file, and in CMakeLists.txt there's an entry for the srevice in the 'add_service_files' section. Everything compiles right. Other services that Ive written work. What have I done wrong? I thought it was some kind of naming problem, but I think the names I've chosen are somewhat original. Any help would be appreciated. I can add more info if requested.

EDIT 1: My project works like this: I have a turtlebot and I use an internet service to transmit direction info from one computer to another, then through the chrome web browser, websockets and rosbridge server to the turtlebot. I have several services that I've authored that help me out. So far that works. I have also tried to implement amcl and gmapping functions that I try to start and stop remotely. I use the app_manager and three rapps. One rapp is for teleop, one for gmapping, and one for amcl.

I should provide documents showing some of these functions, but the idea is that the rosbridge server stuff tells the app_manager stuff to start and stop different launch files, allowing for this different functionality. This is why my service 'load_map_db' is preceded by the '/app_manager/application/'. What I don't do, is use the rocon launcher. Everything runs on the same port and there's no need to switch (I think they call it flip) from one port to another. I do use the app_manager 'start_app' and 'stop_app'.

I thought briefly that the rosbridge server didn't know about the app_manager navigation services because they weren't started when the rosbridge server was started. This didn't pan out. I restarted the rosbridge server stuff as well as I could in javascript at the time that the load_map_db service was used and there was no change.

I don't understand how some of the services work (like 'list_maps') but this one doesn't. Long ago you could have inserted a control character into a file or file name and not know it. Maybe I have done this? I suspect today's text editors will not let you do this. Below I include some source material.

This is my launch file for the whole program:

<launch>
  <arg name="rapp_lists" default="tele_presence/tele_presence_apps.rapps"/> 
  <include file="$(find tele_presence)/launch/includes/app_manager_rocon.launch.xml">
    <arg name="rapp_lists" value="$(arg rapp_lists)" />
  </include>

  <include file="$(find rosbridge_server)/launch/rosbridge_websocket.launch"/>

</launch>

This is my rapps file:

apps:
 - tele_presence/mapping
 - tele_presence/navigate
 - tele_presence/teleop

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