Problem starting rviz with OGRE EXCEPTION(7:InternalErrorException) [closed]

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Hi,

I am new to ROS. As I am trying to start rviz following the tutorial, I receive this error message right after issuing "rosrun rviz rviz". Please help me if you know the solution. Thanks.

Tuan

Failed to initialize Ogre: OGRE EXCEPTION(7:InternalErrorException): Could not load dynamic library Plugin_CgProgramManager. System Error: Plugin_CgProgramManager.so: cannot open shared object file: No such file or directory in DynLib::load at /tmp/buildd/ros-diamondback-visualization-common-1.4.1/debian/ros-diamondback-visualization-common/opt/ros/diamondback/stacks/visualization_common/ogre/build/ogre_src_v1-7-1/OgreMain/src/OgreDynLib.cpp (line 91)