composite with taper plies

Hi,



I am Sri Harsha from IITMadras.



I have been trying to do composite with 40 plies out of which 20 taper plies in 1 in 20 ramp.



It is giving error which I am sending in the attachment..



If
I am trying to work with 20 normal plies with no taper plies in it and only 20 taper plies separately
it is working but when I do combine these two it is giving error. I do not
know what was wrong in it. Can anyone please help me out in this. I have
to do this as soon as possible.



Please look into this problem and get back to me as early as possible.



Thanking you in anticipating.