Suface data displayed as a black color
 

I'm new in using ParaView. When I launch paraFoam . cavity, my domian looks black. For some reason I can't see any contours. When I go to the Display tab under Display Style-> Surface, I only see a black domain. Has anyone encountered this problem.

This is the error message that I'm getting

Error or warning: There was a VTK Error in file: ~/OpenFOAM/linuxSrc/paraview-2.4.4/VTK/VolumeRendering/vtkProjectedTetrahedraMap per.cxx (241)
vtkProjectedTetrahedraMapper (0x1e40960): Encountered non-tetrahedra cell!
ErrorMessage end
ErrorMessage

Hey Abel, I have this problem
 

Hey Abel,
I have this problem and also the problem with volume rendering, have you solved it?