could not read/ set float parameter ''ks''

[Anonymous]

 Hai iam a uni studet, trying to render the frames of my animation, and sudneely maya stops working and when i see the output window, it says that it could not read/ sent the key parameters

[mcw0]

Not familiar with those shaders.  Are they plugins?  Are you rendering interactively/locally?  Or on a render farm?  If locally, do they render fine in your Maya session?

In any case, "Ks" is typically a specular value.  Maybe try setting a different value for the specular attribute in the shaders and see if that has any effect.