Crashs im Netzwerspiel (server)

[Dwachs]

prissi hier ist ein backtrace:

Code:

#0  0x000000000040a8d2 in karte_t::is_within_limits (this=0x0, x=472, y=733) at bauer/../simworld.h:1225
#1  0x000000000040a9c2 in karte_t::lookup_kartenboden (this=0x0, x=472, y=733) at bauer/../simworld.h:1375
#2  0x000000000040aa41 in karte_t::lookup_kartenboden (this=0x0, pos=...) at bauer/../simworld.h:1378
#3  0x0000000000670383 in fabrik_t::get_fab (welt=0x0, pos=...) at simfab.cc:564
#4  0x000000000066e75d in fabrik_t::update_transit (ware=0x7fffffffaee0, add=false) at simfab.cc:246
#5  0x00000000006fb350 in vehikel_t::loesche_fracht (this=0x4fc4df0) at vehicle/simvehikel.cc:1363
#6  0x0000000000664b39 in convoi_t::destroy (this=0x4fc47d0) at simconvoi.cc:2891
#7  0x00000000006cb147 in karte_t::destroy (this=0xf1fde0) at simworld.cc:695
#8  0x00000000006e0b16 in karte_t::load (this=0xf1fde0, file=0x7fffffffb530) at simworld.cc:5395
#9  0x00000000006dffe4 in karte_t::load (this=0xf1fde0, filename=0x7fffffffb760 "server13353-network.sve") at simworld.cc:5237
#10 0x00000000005930a4 in nwc_sync_t::do_command (this=0x4bf1a90, welt=0xf1fde0) at network/network_cmd_ingame.cc:739
#11 0x00000000006e66f7 in karte_t::do_network_world_command (this=0xf1fde0, nwc=0x4bf1a90) at simworld.cc:6649
#12 0x00000000006e6274 in karte_t::process_network_commands (this=0xf1fde0, ms_difference=0x7fffffffbcdc) at simworld.cc:6598
#13 0x00000000006e6cf1 in karte_t::interactive (this=0xf1fde0, quit_month=2147483647) at simworld.cc:6752
#14 0x00000000006972dc in simu_main (argc=6, argv=0x7fffffffdbd8) at simmain.cc:1234
#15 0x00000000006a6ecc in sysmain (argc=6, argv=0x7fffffffdbd8) at simsys.cc:703
#16 0x000000000070ee4c in main (argc=6, argv=0x7fffffffdbd8) at simsys_s.cc:713

offenbar ist fabrik_t::welt = NULL

Edit: In dem Savegame sind keine Fabriken mehr ???