Meshing error?
 

I made a model with O-grid.
but, some space showed empty mesh. It seems like being missed.

I associated the vertices to curves of each parts.
Seemingly, it didn't show any association problem, but it was shown when the pre-mesh was activated.
In ensight, it also showed missing meshes.

Could you explain the cause of this problem?

Project file and pictures on the link as below.

https://www.dropbox.com/sh/plq359734...QP1fgJlka?dl=0


Thank you.

Sincerely,
Hyowon Lee