I think that you may have better luck if you ask this question on
http://answers.ros.org, as per http://ros.org/wiki/Support

Thanks,

~mc

On Wed, Jul 18, 2012 at 10:09 PM, Lorenzo Riano
<lorenzo.riano@berkeley.edu>wrote:

> Folks,
>
> I've been using pr2_control_utilities<http://ros.org/wiki/pr2_control_utilities>for some time and they are quite robust to changes in msgs and APIs.
> However today, after an upgrade on fuerte, the md5 of
> kinematics_msgs/GetPositionIK changed. Although I recompiled my code (it's
> all python, don't really know if it matters doing rosmake), the problem
> persisted. I've tried several make clean - make iterations on several
> packages. Here is the error that pr2_arm_kinematics reported:
>
> client wants service /pr2_right_arm_kinematics/get_ik to have md5sum
> 877eea62385e0e095b5756ea4386623d, but it has
> 6d82fcb918d48c6d8a708bc55e34ace2. Dropping connection.
>
> However if I do *rossrv md5 kinematics_msgs/GetPositionIK* I get
> 877eea62385e0e095b5756ea4386623d, so I though the client was right and the
> service provider pr2_arm_kinematics had the wrong md5. Since this is
> obtained using apt-get I assumed that it was correctly compiled and
> linked.I tried to manually compile it, but I got the error:
>
> In file included from
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/include/pr2_arm_kinematics/pr2_arm_ik.h:40:0,
>                    from
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/src/pr2_arm_ik.cpp:34:
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/include/pr2_arm_kinematics/pr2_arm_kinematics_utils.h:104:24:
> error: ‘arm_navigation_msgs’ has not been declared
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/include/pr2_arm_kinematics/pr2_arm_kinematics_utils.h:104:57:
> error: ‘robot_state’ was not declared in this scope
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/include/pr2_arm_kinematics/pr2_arm_kinematics_utils.h:105:24:
> error: expected primary-expression before ‘const’
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/include/pr2_arm_kinematics/pr2_arm_kinematics_utils.h:105:78:
> error: expression list treated as compound expression in initializer
> [-fpermissive]
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/src/pr2_arm_ik.cpp:
> In member function ‘void
> pr2_arm_kinematics::PR2ArmIK::addJointToChainInfo(boost::shared_ptr<const
> urdf::Joint>, kinematics_msgs::KinematicSolverInfo&)’:
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/src/pr2_arm_ik.cpp:127:3:
> error: ‘arm_navigation_msgs’ has not been declared
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/src/pr2_arm_ik.cpp:127:36:
> error: expected ‘;’ before ‘limit’
>
> /opt/ros/fuerte/stacks/pr2_kinematics/pr2_arm_kinematics/src/pr2_arm_ik.cpp:129:3:
> error: ‘limit’ was not declared in this scope
>   make[3]: *** [CMakeFiles/pr2_arm_kinematics_lib.dir/src/pr2_arm_ik.o]
> Error 1
>
> so something really strange is going on.
>
> The kinematics_msgs folder only has the content:
>
> cmake  manifest.xml  msg  srv
>
> And the generated messages are somewhere else, namely
> /opt/ros/fuerte/lib/python2.7/dist-packages/kinematics_msgs/srv. There if
> open _GetPositionIK.py I get:
>
> _md5sum = "bf9ee33930d9eaff390b8af4a213ba62"
>
> BUMP! What is the right md5? What am I doing wrong?
>
> Lorenzo
>
> --
> Lorenzo Riano, PhD
> Research Scientist
> EECS
> University of California Berkeley
> Berkeley, CA
> 94720
>
> email: lorenzo.riano@berkeley.edu
> skype: lorenzo.riano
>
>
>
>
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>


-- 
Michael Carroll
http://mjcarroll.net | carroll.michael@gmail.com | 513.407.1337