(fixed) Shooter crash

[Kain]

Got a seg-fault crash on a floor trigger just after the munchers in the test dungeon, presumably one that activates a launcher.

INIT: Parsing configuration file
INIT: Using gamedir test_dungeon (base:0)
INIT: Using color depth of 32
INIT: Starting FMOD
INIT: Setting up triple buffer
LUA: Lua initialized
Parsing base/global.lua
Parsing base/graphics.lua
Parsing base/util.lua
Parsing base/triggers.lua
Parsing base/conditions.lua
Parsing base/monster.lua
Parsing base/methods.lua
Parsing base/damage.lua
Parsing base/xp.lua
Parsing base/magic.lua
Parsing base/msg_handlers.lua
Parsing base/system.lua
Parsing base/startup.lua
Parsing base/objects.lua
OBJ: 395 system archs
Parsing test_dungeon/objects.lua
OBJ: 396 total archs
Parsing test_dungeon/dungeon.lua
PROGRAM CRASH!
Reason: Segmentation Fault
Stack Dump:
DSBmain
DSBgameloop
run_timers
adv_flyer