Kangaroo Tensegrity Model - Animation breaking up

Hi all,

I am currently testing possibility of transforming Kelvin Cell into a tensegrity structure. I have been using the definition for tensegrity simulations found on the forum in previous discussions, e.g.:

http://www.grasshopper3d.com/group/kangaroo/forum/topics/tensegrity...

(file name:kelvin cell)

Everything seems to be working fine, however when I start the animation, as soon as the model 'hits' the floor it disappears (also everything from rhino model gets erased).

in the other grashopper definition that I tried (file name: kelvin cell 2)

the tensigrity itself is not working. 

I wonder why and what the logic behind this behaviour is...

As I am relatively new at grasshopper and kangaroo I would greatly appreciate any help or suggestions.

Files attached below;)