fillet problem

Hi everybody,

I dont know if this is the right forrum since my issue is with the fillet component, but I posted it here since it works fine before I transform som polylines within a c# component. 

I have a series of curves distributed along a guide curve, I then morph between the curves using the c# component. The funny thing is that the fillet component works on the curves before I put them into the c# component, and even thought the output is still polylines(same point and segment count as before) it wont work after.

any ideas? or should I code the fillet myself?