Do you try without deleting the defenses (sword, dagger, etc) but setting the prob as 0? (I know that it isn't a solution, but it's a way to avoid the problem and it works fine for me)
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for item_attr
-- ----------------------------
DROP TABLE IF EXISTS `item_attr`;
CREATE TABLE `item_attr` (
`apply` enum('MAX_HP','MAX_SP','CON','INT','STR','DEX','ATT_SPEED','MOV_SPEED','CAST_SPEED','HP_REGEN','SP_REGEN','POISON_PCT','STUN_PCT','SLOW_PCT','CRITICAL_PCT','PENETRATE_PCT','ATTBONUS_HUMAN','ATTBONUS_ANIMAL','ATTBONUS_ORC','ATTBONUS_MILGYO','ATTBONUS_UNDEAD','ATTBONUS_DEVIL','STEAL_HP','STEAL_SP','MANA_BURN_PCT','DAMAGE_SP_RECOVER','BLOCK','DODGE','RESIST_SWORD','RESIST_TWOHAND','RESIST_DAGGER','RESIST_BELL','RESIST_FAN','RESIST_BOW','RESIST_FIRE','RESIST_ELEC','RESIST_MAGIC','RESIST_WIND','REFLECT_MELEE','REFLECT_CURSE','POISON_REDUCE','KILL_SP_RECOVER','EXP_DOUBLE_BONUS','GOLD_DOUBLE_BONUS','ITEM_DROP_BONUS','POTION_BONUS','KILL_HP_RECOVER','IMMUNE_STUN','IMMUNE_SLOW','IMMUNE_FALL','SKILL','BOW_DISTANCE','ATT_GRADE_BONUS','DEF_GRADE_BONUS','MAGIC_ATT_GRADE','MAGIC_DEF_GRADE','CURSE_PCT','MAX_STAMINA','ATTBONUS_WARRIOR','ATTBONUS_ASSASSIN','ATTBONUS_SURA','ATTBONUS_SHAMAN','ATTBONUS_MONSTER','MALL_ATTBONUS','MALL_DEFBONUS','MALL_EXPBONUS','MALL_ITEMBONUS','MALL_GOLDBONUS','MAX_HP_PCT','MAX_SP_PCT','SKILL_DAMAGE_BONUS','NORMAL_HIT_DAMAGE_BONUS','SKILL_DEFEND_BONUS','NORMAL_HIT_DEFEND_BONUS','PC_BANG_EXP_BONUS','PC_BANG_DROP_BONUS','EXTRACT_HP_PCT','RESIST_WARRIOR','RESIST_ASSASSIN','RESIST_SURA','RESIST_SHAMAN','ENERGY','DEF_GRADE','COSTUME_ATTR_BONUS','MAGIC_ATTBONUS_PER','MELEE_MAGIC_ATTBONUS_PER','RESIST_ICE','RESIST_EARTH','RESIST_DARK','ANTI_CRITICAL_PCT','ANTI_PENETRATE_PCT','BLEEDING_REDUCE','BLEEDING_PCT','ATTBONUS_WOLFMAN','RESIST_WOLFMAN','RESIST_CLAW','ANTI_RESIST_MAGIC') NOT NULL DEFAULT 'MAX_HP',
`prob` varchar(100) NOT NULL DEFAULT '',
`value` varchar(100) NOT NULL DEFAULT '',
`weapon` varchar(100) NOT NULL DEFAULT '',
`body` varchar(100) NOT NULL DEFAULT '',
`wrist` varchar(100) NOT NULL DEFAULT '',
`foots` varchar(100) NOT NULL DEFAULT '',
`neck` varchar(100) NOT NULL DEFAULT '',
`head` varchar(100) NOT NULL DEFAULT '',
`shield` varchar(100) NOT NULL DEFAULT '',
`ear` varchar(100) NOT NULL DEFAULT '',
`belt` varchar(100) NOT NULL DEFAULT '',
PRIMARY KEY (`apply`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC;
-- ----------------------------
-- Records of item_attr
-- ----------------------------
INSERT INTO `item_attr` VALUES ('MAX_HP', '35', '3000', '0', '1', '1', '1', '1', '1', '0', '0', '1');
INSERT INTO `item_attr` VALUES ('CON', '11', '15', '1', '0', '0', '0', '0', '0', '1', '0', '1');
INSERT INTO `item_attr` VALUES ('INT', '11', '15', '1', '0', '0', '0', '0', '0', '1', '0', '1');
INSERT INTO `item_attr` VALUES ('STR', '11', '15', '1', '0', '0', '0', '0', '0', '1', '0', '1');
INSERT INTO `item_attr` VALUES ('DEX', '11', '15', '1', '0', '0', '0', '0', '0', '1', '0', '1');
INSERT INTO `item_attr` VALUES ('ATT_SPEED', '8', '10', '0', '0', '0', '1', '0', '1', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('CAST_SPEED', '8', '30', '1', '1', '1', '0', '0', '1', '0', '0', '1');
INSERT INTO `item_attr` VALUES ('HP_REGEN', '65', '50', '0', '0', '1', '0', '1', '1', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('POISON_PCT', '8', '10', '1', '0', '0', '0', '0', '1', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('CRITICAL_PCT', '18', '15', '1', '0', '0', '1', '1', '0', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('PENETRATE_PCT', '30', '15', '1', '0', '1', '0', '1', '0', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('ATTBONUS_HUMAN', '10', '20', '1', '0', '1', '0', '0', '1', '1', '1', '0');
INSERT INTO `item_attr` VALUES ('STEAL_HP', '50', '20', '0', '1', '1', '0', '0', '0', '0', '0', '1');
INSERT INTO `item_attr` VALUES ('BLOCK', '10', '15', '0', '0', '0', '0', '0', '0', '1', '0', '0');
INSERT INTO `item_attr` VALUES ('DODGE', '10', '15', '0', '0', '0', '1', '0', '1', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('RESIST_WARRIOR', '18', '20', '0', '1', '0', '1', '1', '0', '0', '1', '1');
INSERT INTO `item_attr` VALUES ('RESIST_ASSASSIN', '18', '20', '0', '1', '0', '1', '1', '0', '0', '1', '1');
INSERT INTO `item_attr` VALUES ('RESIST_SURA', '18', '20', '0', '1', '0', '1', '1', '0', '0', '1', '1');
INSERT INTO `item_attr` VALUES ('RESIST_SHAMAN', '18', '20', '0', '1', '0', '1', '1', '0', '0', '1', '1');
INSERT INTO `item_attr` VALUES ('RESIST_MAGIC', '25', '20', '0', '1', '1', '0', '0', '1', '0', '0', '1');
INSERT INTO `item_attr` VALUES ('REFLECT_MELEE', '18', '30', '0', '1', '0', '0', '0', '0', '1', '0', '1');
INSERT INTO `item_attr` VALUES ('RESIST_SWORD', '0', '15', '0', '0', '0', '0', '0', '0', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('RESIST_TWOHAND', '0', '15', '0', '0', '0', '0', '0', '0', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('RESIST_DAGGER', '0', '15', '0', '0', '0', '0', '0', '0', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('RESIST_BELL', '0', '15', '0', '0', '0', '0', '0', '0', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('RESIST_FAN', '0', '15', '0', '0', '0', '0', '0', '0', '0', '0', '0');
INSERT INTO `item_attr` VALUES ('MAGIC_ATT_GRADE', '9', '150', '0', '1', '0', '0', '0', '0', '0', '0', '1');
INSERT INTO `item_attr` VALUES ('ATT_GRADE_BONUS', '9', '150', '0', '1', '0', '0', '0', '0', '0', '0', '1');
INSERT INTO `item_attr` VALUES ('IMMUNE_STUN', '3', '100', '0', '0', '0', '0', '0', '0', '1', '0', '0');
INSERT INTO `item_attr` VALUES ('IMMUNE_SLOW', '3', '100', '0', '0', '0', '0', '0', '0', '0', '0', '1');
INSERT INTO `item_attr` VALUES ('IMMUNE_FALL', '3', '100', '0', '0', '0', '0', '0', '0', '0', '0', '1');