I am also able to trigger this when playing a multiplayer game as spectator, and the error message does indeed indicate this could be the reason:
Program received signal SIGSEGV, Segmentation fault.
0x0000000000ac56df in Interactive_Player::player (this=0x0) at /home/user/widelands/src/wui/interactive_player.h:68
68 return game().player(m_player_number);
I believe there should be a stderr file in the same place as stdout on Windows, so you might want to check that for more information in the future. :)
Thanks for noticing and reporting this issue.
I am also able to trigger this when playing a multiplayer game as spectator, and the error message does indeed indicate this could be the reason: Player: :player (this=0x0) at /home/user/ widelands/ src/wui/ interactive_ player. h:68 player( m_player_ number) ;
Program received signal SIGSEGV, Segmentation fault.
0x0000000000ac56df in Interactive_
68 return game().
I believe there should be a stderr file in the same place as stdout on Windows, so you might want to check that for more information in the future. :)