Problem with stage + rviz (segmentation fault)

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Hi, i'm simulating an array of robots with laser and I want to see all laser scans in Rviz.

After start roscore, if I rosrun stageros node and then rviz node, the problem appears:

gustavo@gustavo-ProBook:~$ rosrun rviz rviz 
[ INFO] [1361665790.163219703]: rviz version 1.9.20
[ INFO] [1361665790.163372795]: compiled against OGRE version 1.7.4 (Cthugha)
[ WARN] [1361665794.846113178, 38.500000000]: OGRE EXCEPTION(7:InternalErrorException): Cannot compile GLSL high-level shader : rviz/box.geom invalid valueCannot compile GLSL high-level shader : rviz/box.geom invalid value in GLSLProgram::compile at /build/buildd/ogre-1.7.4/RenderSystems/GL/src/GLSL/src/OgreGLSLExtSupport.cpp (line 65)
[ WARN] [1361665794.858389102, 38.500000000]: OGRE EXCEPTION(2:InvalidParametersException): Named constants have not been initialised, perhaps a compile error. in GpuProgramParameters::_findNamedConstantDefinition at /build/buildd/ogre-1.7.4/OgreMain/src/OgreGpuProgramParams.cpp (line 1425)
[ WARN] [1361665794.865810096, 38.500000000]: OGRE EXCEPTION(2:InvalidParametersException): Named constants have not been initialised, perhaps a compile error. in GpuProgramParameters::_findNamedConstantDefinition at /build/buildd/ogre-1.7.4/OgreMain/src/OgreGpuProgramParams.cpp (line 1425)
[ WARN] [1361665794.866371060, 38.500000000]: OGRE EXCEPTION(2:InvalidParametersException): Named constants have not been initialised, perhaps a compile error. in GpuProgramParameters::_findNamedConstantDefinition at /build/buildd/ogre-1.7.4/OgreMain/src/OgreGpuProgramParams.cpp (line 1425)
[ WARN] [1361665795.010072435, 38.600000000]: OGRE EXCEPTION(7:InternalErrorException): Cannot compile GLSL high-level shader : rviz/pass_pos_color.vert Cannot compile GLSL high-level shader : rviz/pass_pos_color.vert 0:1(15): preprocessor error: syntax error, unexpected IDENTIFIER, expecting NEWLINE
 in GLSLProgram::compile at /build/buildd/ogre-1.7.4/RenderSystems/GL/src/GLSL/src/OgreGLSLExtSupport.cpp (line 65)
Violación de segmento (`core' generado)

The curious part is that if I rosrun rviz node first and then start stageros node, everything is fine.

So, where can I report this bug? Any solution?

EDIT: I'm using ROS groovy, Ubuntu 12.04