Fine volume mesh makes NetGen.exe closing

[esp3450]

Hi,

I have a simple example on a .geo file where the volume meshing is working with ver. 5.3.
It is not working with ver. 6.2.2301 when meshing is defined as "Fine" or "Very Fine".
The software simply close without any further message.
I have worked with different boundingboxes without success.

Can someone explain it?

The .geo file is attached as .txt please rename to .geo.

geo-NetGen.txt

Your help is much appreciated

Erik