I'm playing a game with Factorissimo2 and ran into a crash.

I had an Android 1 standing on Nauvis, and was standing inside of a Factorissimo. On pressing Ctrl-U; the game crashed in trying to switch between the bodies.

 941.420 Error MainLoop.cpp:1284: Exception at tick 41033369: The mod Nullius (1.4.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event nullius::nullius-next-body (ID 226)
LuaEntity belongs to surface nauvis (index 1) but a LuaEntity belonging to surface Factory floor 22 (index 23) was expected.
stack traceback:
        [C]: in function 'set_controller'
        __nullius__/scripts/body.lua:53: in function 'switch_body'
        __nullius__/scripts/body.lua:196: in function 'cycle_body'
        __nullius__/scripts/body.lua:215: in function <__nullius__/scripts/body.lua:213>
 941.420 Error ServerMultiplayerManager.cpp:91: MultiplayerManager failed: "The mod Nullius (1.4.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event nullius::nullius-next-body (ID 226)
LuaEntity belongs to surface nauvis (index 1) but a LuaEntity belonging to surface Factory floor 22 (index 23) was expected.
stack traceback:
        [C]: in function 'set_controller'
        __nullius__/scripts/body.lua:53: in function 'switch_body'
        __nullius__/scripts/body.lua:196: in function 'cycle_body'
        __nullius__/scripts/body.lua:215: in function <__nullius__/scripts/body.lua:213>"
 941.420 Info ServerMultiplayerManager.cpp:794: updateTick(41033369) changing state from(InGame) to(Failed)
 941.420 Quitting: multiplayer error.
 942.414 Info ServerMultiplayerManager.cpp:140: Quitting multiplayer connection.

OK, I was able to reproduce this, and I have a fix for the next update, which should be sometime this week.

This should be fixed in the current update.

Thanks for the quick response!