Graphscad cannot open Openscad

Hi.
I downloaded few days ago the latest Graphscad version (10) on a Linux Ubuntu 17.04 computer.
Graphscad works great but doesn't open anymore Openscad either automatically or manually when using the dedicated option in the tool bar (auto refresh is on), as it was in the past so, consequently, I haven't got any view of my Grapfscad work in Openscad.
I though it was related to the Graphscad version and came back to the previous one but the trouble is the same.
I removed and reinstalled Openscad (sudo apt-get .....) which works fine but there is still no link between Openscad and Graphscad.

Any idea

Thanks for your help.