Fluent case import error
 

Dear All;

I want to import Fluent case file which has tetrahedral mesh into Ansys CFX 14.5. I have ever imported other case files so far, but this time the following error is reported. Any idea and solution about this?

Regards

"ERROR
The importing process reported the following warning(s) while importing
the mesh from the requested file:

Failed to construct all elements.


There was a problem importing the mesh from the requested file.
The importing process reported the following problem:

Unable to import mesh: No 3D elements imported."