Custom service with custom message

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Hi All,

I am trying to create a package in which I define my messages and use the same in defining services like

foo_msgs/msg/MS1.msg

foo_msgs/srv/SRV1/srv

where SRV1.srv contains a line with foo_msgs/MS1[] some_name

I have all the dependencies set in CMakeLists.txt file as

set( MESSAGE_DEPENDENCIES
std_msgs
geometry_msgs
)

find_package(catkin REQUIRED 
 COMPONENTS
 message_generation
 ${MESSAGE_DEPENDENCIES}
)

include_directories(${catkin_INCLUDE_DIRS})
link_directories(${catkin_LIBRARY_DIRS})

add_message_files( DIRECTORY msg
FILES
AgentState.msg
AllAgentsState.msg
)

# the services
add_service_files( DIRECTORY srv
  FILES
  SetAgentState.srv
  GetAgentState.srv
  SetAllAgentsState.srv
  GetAllAgentsState.srv
 )

# generate the messages
generate_messages(DEPENDENCIES ${MESSAGE_DEPENDENCIES})

#Declare package run-time dependencies
catkin_package( CATKIN_DEPENDS message_runtime ${MESSAGE_DEPENDENCIES})

But this always fails with this error

/opt/ros/hydro/share/genmsg/cmake/pkg-genmsg.cmake.em:50: error: <class 'genmsg.base.InvalidMsgSpec'>: Invalid declaration: pedsim_msgs/AgentState

I am using Hydro on Ubuntu 12.04.