Could you please post more details like what are the error messages printed, which versions of the packages do you have installed etc.?
Also I think this should not be asked on ros-users but answers.ros.org.

- Dirk


On 26.11.2012 14:23, Oswald Berthold wrote:
>
> hi again,
>
> thanks dirk for your previous answer. i move this little issue to a new
> thread, as the conditions changed. i do have an ubuntu desktop machine
> for testing, so i went ahead and installed ros-groovy-desktop plus
> -rqt. this went well. alas,
>
> $ rosrun rqt_gui rqt_gui
>
> doesn't serve me, because "qt_gui" isn't found. the "qt_gui*"
> directories do reside in /opt/ros/groovy/share though.
>
> gladly accepting any hints.
>
> bst, opt
>