Hello Fabien,
The engine hangs when I use just Winboard by itself. It played one game (of three) and then the engines just refused to move anything. No Galis or WBTM to blame this trip.
I copied the Shredder 6 log at the end.
I hope this helps. I really do want to help.
Later.
POLYGLOT MOVE Kg8
POLYGLOT WAITINGXBOARD 1/2-1/2 {Draw by repetition}
XBOARD pong 1
ENGINE ucinewgame
ENGINE ucinewgame
ENGINE setoption name Ponder value true
ENGINE setoption name Ponder value false
< XBOARD result 1/2-1/2 {Draw by repetition}
POLYGLOT GAME END
POLYGLOT WAITING
< XBOARD force
POLYGLOT WAITING
< XBOARD ping 1
< XBOARD new
POLYGLOT NEW GAME
POLYGLOT WAITING
< XBOARD new
POLYGLOT NEW GAME
POLYGLOT WAITING
< XBOARD random
< XBOARD level 0 2 2
< XBOARD post
< XBOARD hard
POLYGLOT WAITING
< XBOARD easy
POLYGLOT WAITING
< ENGINE info string illegal command
< ENGINE info string illegal command
< XBOARD computer
< XBOARD time 12000
< XBOARD otim 12000
< XBOARD force
POLYGLOT WAITING
< XBOARD e2e4
POLYGLOT MOVE e4
POLYGLOT WAITING