Game: Reading Map Data Complete!
Reading Elemental Data ... done!
 Reading Player Names And Tribe Data ... done!
 Reading Heights Data ... done!
 Reading Terrain Data ... done!
 Reading Map Objects ... done
Reading Player Start Position Data ... done!
 Reading Resources Data ... done!
 Reading Map Extra Data ... done!
 Reading Allowed Worker Types Data ... done!
 Reading Allowed Building Types Data ... done!
 Reading Node Ownership Data ... done!
 Reading Exploration Data ... done!
 Reading AreaWatchers Data ... done!
 Reading Flag Data ... done!
 Reading Road Data ... done!
 Reading Building Data ... widelands: /home/user/widelands/src/logic/immovable.cc:77: void Widelands::BaseImmovable::set_position(Widelands::Editor_Game_Base&, Widelands::Coords): Assertion `f.field->immovable->get_size() == NONE' failed.

Program received signal SIGABRT, Aborted.
0x0012e416 in __kernel_vsyscall ()
(gdb) bt
#0  0x0012e416 in __kernel_vsyscall ()
#1  0x004f6941 in raise () from /lib/libc.so.6
#2  0x004f9e42 in abort () from /lib/libc.so.6
#3  0x004ef8e8 in __assert_fail () from /lib/libc.so.6
#4  0x0856e937 in Widelands::BaseImmovable::set_position (this=0x8977b10, egbase=..., c=...) at /home/user/widelands/src/logic/immovable.cc:77
#5  0x0858fc2c in Widelands::Building::init (this=0x8977b10, egbase=...) at /home/user/widelands/src/logic/building.cc:357
#6  0x0858f2a0 in Widelands::Building_Descr::create (this=0xb1f5780, egbase=..., owner=..., pos=..., construct=true, old=0x0, loading=true)
    at /home/user/widelands/src/logic/building.cc:172
#7  0x085577ff in Widelands::Editor_Game_Base::warp_constructionsite (this=0xbfffcfa8, c=..., owner=1 '\001', idx=..., old_id=..., loading=true)
    at /home/user/widelands/src/logic/editor_game_base.cc:383
#8  0x086e57e7 in Widelands::Map_Building_Data_Packet::Read (this=0xbfffc678, fs=..., egbase=..., skip=false, mol=...)
    at /home/user/widelands/src/map_io/widelands_map_building_data_packet.cc:92
#9  0x08646713 in Widelands::WL_Map_Loader::load_map_complete (this=0x923cef0, egbase=..., scenario=true)
    at /home/user/widelands/src/map_io/widelands_map_loader.cc:236
#10 0x086a0ec9 in Widelands::Game_Map_Data_Packet::Read_Complete (this=0xbfffc718, game=...)
    at /home/user/widelands/src/game_io/game_map_data_packet.cc:59
#11 0x084e2443 in Widelands::Game_Loader::load_game (this=0xbfffc834, multiplayer=false) at /home/user/widelands/src/game_io/game_loader.cc:80
#12 0x085a28af in Widelands::Game::run_load_game (this=0xbfffcfa8, filename=...) at /home/user/widelands/src/logic/game.cc:424
#13 0x0833c298 in WLApplication::load_game (this=0x88bc618) at /home/user/widelands/src/wlapplication.cc:2051
#14 0x0833b044 in WLApplication::mainmenu_singleplayer (this=0x88bc618) at /home/user/widelands/src/wlapplication.cc:1598
#15 0x0833ab8f in WLApplication::mainmenu (this=0x88bc618) at /home/user/widelands/src/wlapplication.cc:1516
#16 0x083362ef in WLApplication::run (this=0x88bc618) at /home/user/widelands/src/wlapplication.cc:441
#17 0x08333b19 in main (argc=1, argv=0xbffff434) at /home/user/widelands/src/main.cc:48