Error coming in turbogrid- Degenerate knot error-
 

i am getting this error when i load the blade in turbogrid. Dont know what to do.
pls help

ERROR
ICEM error:{Degenerate knot error
}
ERROR
No kernel surfaces found for key 'extended centreline surface'.
ERROR
No kernel surfaces found for key 'extended high surface'.

ICEM or Turbogrid

Hi, did you solve the problem? I have the same one. Thank you.