ET crashed

I am making the model with ET Lite and Tspline, however, it is always crashed when I tried to Set the reference with nurbs surface converted from Tspline model.
Please help.

EvoluteTools meshes the surface when setting it as a reference. Maybe your tolerance setting is very small and therefore the mesh becomes too big. Either try to increase the tolerance or you can also mesh the surface yourself and set the mesh as a reference. Please let me know if this helps.

Thank you for replying so quick, you are right my model scale is too big for the tolerance setting. And i scale down the model and it was resovled the issue. Thank you again for the help.