Trying to play Go game with Ladder

Hello,

We have great games within the GNUstep apps collection. Chess is a 
must have.

What about Go?
- The old ported NeXTGo is not building and with B&W interface not 
appealing..
- Ladder seems promising... but...

About Ladder:

- Successfully built and installed with GNU runtime from svn gap.
- Latest GNUGo server also installed.

Following the screenshot:
https://www.nongnu.org/gap/ladder/ladder-scrshot1.jpg
We should be able to create a new file and to begin a game against 
GNUGo.
But no way to create a new document from the menu: it is grayed.

I tried to open a sgf file got online, because there is none inside 
the resources owned by Ladder: it shows the board, as expected, but 
seemingly not the saved party.
I tried also with a sgf emptied.
When I tried to put a stone on the board, there was a segfault. Maybe 
Ladder is expecting a particular SGF format? This is not documented.
I did not obtain any significant message with debugapp tool.

Is anybody able to play Go game with Ladder?

Regards,
Patrick

-- 
Patrick Cardona - Pi400 - GNU/Linux aarch64 (Debian 13.1)
Xorg (1:7.7+24) - libcairo2 (1.18.4-1+rpt1 arm64)
Window Maker (0.96.0) - GWorkspace (1.1.0 - 02 2025) - Theme: AGNOSTEP 
- MUA: GNUMail (1.4.0)