[Gmsh] Import of step files

[alessandro.vicini at virgilio.it]

I have a geometry defined in a .stp file (attached). The file is 
correctly imported by Gmsh (I can visualize the geometry). In order to 
be able to operate on the geometry, I generate a .geo file with the 
command <Merge "c:/PATH/model.stp";>. 
When I read this file though, it 
seems I cannot do any operation; if I try for example to delete a 
surface, everything on the screen disappears. I have then to reload the 
.geo file, in which I find the "delete surface" command (but in the 
model the surface is still there!!). 
I have tried also starting from 
the file in iges format, with the same results.
Where is the problem?
Thank you very much for your attention.
 
Regards,
 
Alessandro Vicini
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