server crash syserr

[bumxd 20]

hi can anybody help fix it problem,people can crash channel and syserr:

SYSERR: Aug 25 19:24:15.232408 :: Select: wrong QUEST_SELECT request! : 108488
SYSERR: Aug 25 19:24:15.593962 :: Select: wrong QUEST_SELECT request! : 108488
SYSERR: Aug 25 19:24:15.993017 :: Select: wrong QUEST_SELECT request! : 108488
SYSERR: Aug 25 19:24:16.111866 :: Select: wrong QUEST_SELECT request! : 108488
SYSERR: Aug 25 19:24:16.353698 :: Select: wrong QUEST_SELECT request! : 108488
SYSERR: Aug 25 19:25:03.70550 :: pc_give_or_drop_item: QUEST Make item call error : wrong argument
SYSERR: Aug 25 19:25:03.70615 :: pc_give_or_drop_item: QUEST Make item call error : wrong argument
SYSERR: Aug 25 19:25:03.71807 :: GetQuestStateIndex: QUEST wrong quest state file  find_squareguard . find 

 

new syserr:

SYSERR: Aug 25 19:37:25.249889 :: GetRefineLevel: refine_level_based_on_NAME(0) is not equal to refine_level_based_on_LOCALE_NAME(4).
SYSERR: Aug 25 19:37:28.957767 :: GetQuestStateIndex: QUEST wrong quest state file  find_squareguard . find 
SYSERR: Aug 25 19:37:35.432579 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:37:35.432843 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:37:35.433073 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:37:35.433477 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:37:35.433774 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:37:35.434026 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";

.....

SYSERR: Aug 25 19:38:13.572021 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:38:13.581565 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:38:13.595893 :: locale_find: LOCALE_ERROR: "떨어진 아이템은 %d분 후 사라집니다.";
SYSERR: Aug 25 19:38:16.697503 :: checkpointing: CHECKPOINT shutdown: tics did not updated.

and server crash

this when he drop more yangs on ground

[bumxd 20]

how block drop yang from players? but what can be drop yang from monster only..