Deformed Mesh Error [Karamba]

Hi everyone,

I'd like to know why the output 'DeformedMesh' of the tool 'ModelView' is always empty in the cases I run (for any case of study). First I thought it was one of the inputs I used, however I've seen several tutorials where they use this option the same way I do. The file and an image capture are attached.

Thank you in advice for your answer and I'm sorry if the question is very trivial.