Error compiling kuka_lwr_fri package

Hi,

When i rosmake the kuka_lwr_fri package i get the following error:

[UseOrocos] Generating typekit for kuka_lwr_fri...

/opt/ros/electric/stacks/orocos_toolchain/orogen/lib/orogen/gen/imports.rb:19:in
`merge_xml': cannot load xml: plugin not found (ArgumentError)
from
/opt/ros/electric/stacks/orocos_toolchain/orogen/lib/orogen/gen/imports.rb:19:in
`from_raw_data'
from
/opt/ros/electric/stacks/orocos_toolchain/orogen/lib/orogen/gen/project.rb:259:in
`using_rtt_typekit'
from
/opt/ros/electric/stacks/orocos_toolchain/orogen/lib/orogen/gen/typekit.rb:823:in
`initialize'
from
/opt/ros/electric/stacks/orocos_toolchain/orogen/bin/typegen:11:in `new'
from /opt/ros/electric/stacks/orocos_toolchain/orogen/bin/typegen:11
CMake Error at
/opt/ros/electric/stacks/orocos_toolchain/rtt/install/lib/cmake/orocos-rtt/UseOROCOS-RTT.cmake:389
(add_subdirectory):
add_subdirectory given source "typekit" which is not an existing
directory.
Call Stack (most recent call first):
CMakeLists.txt:38 (orocos_typegen_headers)

I really dont know whats wrong, i downloaded the orocos toolchain via
the software center in ubuntu 11.04

Kind regards

Frederik

--
ir. Frederik Debrouwere
Katholieke Universiteit Leuven
Departement Werktuigkunde, Afdeling PMA
Celestijnenlaan 300b - bus 2420
B-3001 Heverlee
Tel: +32 16 372207

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