Map Crashing

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1208616752 (LWP 8671)]
0x080eb3c4 in skill_castend_nodamage_id (src=0xb206386c, bl=0xb206386c, skillid=252, skilllv=10, tick=393431556, flag=0)
at skill.c:3012
3012 tsce = (tsc && type != -1)?tsc->data[type]:NULL;
(gdb) bt full
#0 0x080eb3c4 in skill_castend_nodamage_id (src=0xb206386c, bl=0xb206386c, skillid=252, skilllv=10, tick=393431556, flag=0)
at skill.c:3012
sd = (struct map_session_data *) 0x0
dstsd = (struct map_session_data *) 0x0
md = (struct mob_data *) 0xb206386c
dstmd = (struct mob_data *) 0xb206386c
hd = (struct homun_data *) 0x0
mer = (struct mercenary_data *) 0x0
sstatus = (struct status_data *) 0xb2063a54
tstatus = (struct status_data *) 0xb2063a54
tsc = (struct status_change *) 0xb2063aa8
tsce = <value optimized out>
i = <value optimized out>
type = 84279300
__FUNCTION__ = "skill_castend_nodamage_id"
scs = {SC_QUAGMIRE, SC_PROVOKE, SC_ROKISWEIL, SC_GRAVITATION, SC_SUITON, SC_STRIPWEAPON, SC_STRIPSHIELD,
SC_STRIPARMOR, SC_STRIPHELM, SC_BLADESTOP}
spellarray = {14, 19, 20}
mask = {{0, -1}, {1, -1}, {1, 0}, {1, 1}, {0, 1}, {-1, 1}, {-1, 0}, {-1, -1}}
per = {{20, 50}, {50, 60}, {25, 75}, {60, 64}, {34, 67}}
sc = {SC_STUN, SC_CURSE, SC_SILENCE, SC_BLEEDING}
#1 0x080f6ce7 in skill_castend_id (tid=-1, tick=393431556, id=110023415, data=0) at skill.c:5589
dx = <value optimized out>
dy = <value optimized out>
target = (struct block_list *) 0xb206386c
src = (struct block_list *) 0xb206386c
sd = (struct map_session_data *) 0x0
md = (struct mob_data *) 0xb206386c
ud = (struct unit_data *) 0xb2063884
sc = <value optimized out>
inf = 300
inf2 = <value optimized out>
flag = 0
#2 0x0813c477 in unit_skilluse_id2 (src=0xb206386c, target_id=110023415, skill_num=252, skill_lv=10, casttime=0,
castcancel=<value optimized out>) at unit.c:1103
k = <value optimized out>
ud = (struct unit_data *) 0xb2063884
tstatus = (struct status_data *) 0xb2063a54
sc = (struct status_change *) 0xb2063aa8
sd = (struct map_session_data *) 0x0
target = (struct block_list *) 0xb206386c
tick = 393431556
temp = 0
__FUNCTION__ = "unit_skilluse_id2"
#3 0x080aec61 in mobskill_use (md=0xb206386c, tick=393431556, event=-1) at mob.c:3043
x = 2069
y = 1965
ms = (struct mob_skill *) 0xb6745958
fbl = (struct block_list *) 0x0
bl = (struct block_list *) 0x5060004
fmd = (struct mob_data *) 0x0
i = 5
j = <value optimized out>
n = 5
__FUNCTION__ = "mobskill_use"
#4 0x0813ce15 in unit_attack_timer (tid=-1, tick=393431556, id=110023415, data=0) at unit.c:1539
bl = (struct block_list *) 0xb206386c
---Type <return> to continue, or q <return> to quit---
#5 0x0813d1a4 in unit_attack (src=0xb206386c, target_id=2009640, continuous=1) at unit.c:1308
target = <value optimized out>
ud = (struct unit_data *) 0xb2063884
__FUNCTION__ = "unit_attack"
#6 0x080b29c1 in mob_ai_sub_hard (md=0xb206386c, tick=393431511) at mob.c:1444
fitem = <value optimized out>
tbl = (struct block_list *) 0xdddd110
abl = (struct block_list *) 0xbf85b13c
dist = 235188368
mode = 4527
view_range = 10
can_move = 1
#7 0x080b322e in mob_ai_sub_hard_timer (bl=0xb206386c, ap=0xbf85b1f0 "×Is27Ø÷Ê\r(²\205¿mç�4\b20ÑÝ\r4²\205¿d")
at mob.c:1484
md = (struct mob_data *) 0xb2063aa8
tick = 393431511
#8 0x0804f89a in map_foreachinrange (func=0x80b3210 <mob_ai_sub_hard_timer>, center=0xdddd110, range=22,
type=<value optimized out>) at map.c:565
ap = 0xbf85b1f0 "×Is27Ø÷Ê\r(²\205¿mç�4\b20ÑÝ\r4²\205¿d"
bx = <value optimized out>
by = 17
m = 659
returnCount = 0
bl = <value optimized out>
blockcount = 0
i = 18
x0 = <value optimized out>
x1 = <value optimized out>
y0 = 85
y1 = 129
#9 0x080addc6 in mob_ai_sub_foreachclient (sd=0xdddd110, ap=0xbf85b234 "×Is27h²\205¿)Z24\b\t") at mob.c:1500
No locals.
#10 0x0804e76d in map_foreachpc (func=0x80add90 <mob_ai_sub_foreachclient>) at map.c:1802
args = 0xbf85b234 "×Is27h²\205¿)Z24\b\t"
ret = <value optimized out>
iter = (DBIterator *) 0xb24511b4
sd = (struct map_session_data *) 0xdddd110
#11 0x080adf76 in mob_ai_hard (tid=9, tick=2986752680, id=0, data=0) at mob.c:1607
No locals.
#12 0x08145a29 in do_timer (tick=393431556) at timer.c:390
tid = 9
diff = -45
__FUNCTION__ = "do_timer"
#13 0x081431ce in main (argc=1, argv=0xbf85b324) at core.c:253
next = <value optimized out>
(gdb)