Thanks for updating this to .18! When loading my savegame from 17.79 that used the old Ribbon Maze mod I get the following error. Starting a new game has no issues though. Currently using 18.30, haven't played since 17.79 though.
EDIT: I should clarify, it doesn't actually crash the game but does fail to load the save, I choose a poor title for the thread and can't edit it now.
The mod Ribbon Maze (fix for 0.18) (0.8.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event RibbonMaze018::on_init()
Force already exists
stack traceback:
RibbonMaze018/control/maze-control.lua:769: in function <RibbonMaze018/control/maze-control.lua:764>
stack traceback:
[C]: in function 'create_force'
RibbonMaze018/control/maze-control.lua:769: in function <RibbonMaze018/control/maze-control.lua:764>