Problem in grid import
 

Hi to all
I have generated with Ansys ICEM an unstructured grid and exportex in the .msh format of Fluent.
Unfortunatelly when I open it in Fluent i get this error

Reading "/home/GRID/d.bacci/Weapon_Bay_Test/ICEM/003/WBT003.msh"
19233033 nodes
51468660 mixed cells, zone 19.
Error: read: face 66681613, zone 20.
Reading Faces: failed while reading section 13.

Clearing partially read grid.

Error: Read_Grid_Section: Aborted due to critical error.
Error Object: #f

Error: Error reading "/home/GRID/d.bacci/Weapon_Bay_Test/ICEM/003/WBT003.msh"
Error Object: #f

Real Overflow

Real Underflow

No error handler available
Error: Cortex received a fatal signal (SEGMENTATION VIOLATION)
Error Object: ()

I have tried to get back to ICEM and re mesh but every time is the same. Moreover I do all the checks of possible error and problems but It is always ok, I don't get any error
Can anyone help?
What kind of error is this?

Please Help!
Thanks

David