Can't start SIGIL network game

[GCRaistlin]

I want to play SIGIL in cooperative mode:

crispy-doom.exe -server -iwad doom.wad -file SIGIL_v1_21.wad -warp 51

The start screen ("Waiting for game start...") appears. I press Space to play and... nothing. DOOM doesn't launch. If I remove "-server" switch or change -warp argument to "41" it launches OK. Any ideas?

[Doomkid]

Have you tried sigil_compat with -warp 31?

[fabian]

1 hour ago, Doomkid said:

Have you tried sigil_compat with -warp 31?

That's it. You can't play non-canonical episodes or maps over network, to retain compatibility with Choco.