Something

Creature F0001000000018F1 moved from grid[15,31]cell[2,2] to grid[15,31]cell[2,3].
Creature mover 2 check.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1318413392 (LWP 19408)]
0x08132e4f in Cell (this=0xb16a6b40, cell=@0x4a6ec4e0) at Cell.h:48
48          Cell(const Cell &cell) { data.All = cell.data.All; }


(gdb) bt full
#0  0x08132e4f in Cell (this=0xb16a6b40, cell=@0x4a6ec4e0) at Cell.h:48
No locals.
#1  0x082043a5 in Map::CreatureRelocation (this=0x8a0d5e8, creature=0x8d42148,
    x=0, y=3.70495488e+10, z=-9016, ang=0.342247844) at Map.cpp:516
        old_val = {x_coord = 60, y_coord = 126}
        new_val = {x_coord = 128, y_coord = 277871744}
        old_cell = {data = {Part = {grid_x = 15, grid_y = 31, cell_x = 0,
      cell_y = 2, nocreate = 0, reserved = 0}, All = 133071}}
        new_cell = {data = {Part = {grid_x = 56, grid_y = 20, cell_x = 15,
      cell_y = 7, nocreate = 0, reserved = 71}, All = 149419320}}
#2  0x081a4b1c in Traveller<Creature>::Relocation (this=0xb16a6c10, x=0,
    y=3.70495488e+10, z=-9016, orientation=0.342247844) at Traveller.h:66
No locals.
#3  0x081cdaab in Traveller<Creature>::Relocation (this=0xb16a6c10, x=0,
    y=3.70495488e+10, z=-9016) at Traveller.h:52
No locals.
#4  0x082292ac in RandomMovementGenerator::Update (this=0x8d3bd78,
    creature=@0x8d42148, diff=@0xb16a6c94) at RandomMovementGenerator.cpp:104
        x = 0
        y = 3.70495488e+10
        z = -9016
        traveller = {i_traveller = @0x8d42148}