Creating a SfePy mesh using Blender

[thinkinghurts]

Does anyone know if it is possible to create a mesh in Blender that can be used with SfePy? I tried exporting the Blender mesh as an stl file to 3DSlicer and using that program to convert it to a vtk. But when I used postproc to try and visualize the mesh I got this error:

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xbf in position 89: invalid start byte