1.
Have you this function (get_mob_level) in questlib.lua?
2. Default player_level (in log.quest_reward_log) is tinyint(4), it supports only 127 of max level. Change the column type to smallint(4).
3. You have some missing line in locale_string. I don't know what, because the character encoding is wrong. Try to attach the syslog.
4. Maybe your mob_proto table is crashed. Try to re-create it.
DROP TABLE `mob_proto`;
CREATE TABLE IF NOT EXISTS `mob_proto` (
`vnum` int(11) NOT NULL DEFAULT '0',
`name` varbinary(24) NOT NULL DEFAULT 'Noname',
`locale_name` varbinary(24) NOT NULL DEFAULT 'Noname',
`rank` tinyint(2) NOT NULL DEFAULT '0',
`type` tinyint(2) NOT NULL DEFAULT '0',
`battle_type` tinyint(1) NOT NULL DEFAULT '0',
`level` smallint(3) NOT NULL DEFAULT '1',
`size` enum('SMALL','MEDIUM','BIG') NOT NULL DEFAULT 'SMALL',
`ai_flag` set('AGGR','NOMOVE','COWARD','NOATTSHINSU','NOATTCHUNJO','NOATTJINNO','ATTMOB','BERSERK','STONESKIN','GODSPEED','DEATHBLOW','REVIVE') DEFAULT NULL,
`mount_capacity` tinyint(2) NOT NULL DEFAULT '0',
`setRaceFlag` set('ANIMAL','UNDEAD','DEVIL','HUMAN','ORC','MILGYO','INSECT','FIRE','ICE','DESERT') NOT NULL DEFAULT '',
`setImmuneFlag` set('STUN','SLOW','FALL','CURSE','POISON','TERROR') NOT NULL DEFAULT '',
`empire` tinyint(4) NOT NULL DEFAULT '0',
`folder` varchar(100) NOT NULL DEFAULT '',
`on_click` tinyint(4) NOT NULL DEFAULT '0',
`st` smallint(5) unsigned NOT NULL DEFAULT '0',
`dx` smallint(5) unsigned NOT NULL DEFAULT '0',
`ht` smallint(5) unsigned NOT NULL DEFAULT '0',
`iq` smallint(5) unsigned NOT NULL DEFAULT '0',
`damage_min` smallint(5) unsigned NOT NULL DEFAULT '0',
`damage_max` smallint(5) unsigned NOT NULL DEFAULT '0',
`max_hp` int(10) unsigned NOT NULL DEFAULT '0',
`regen_cycle` tinyint(3) unsigned NOT NULL DEFAULT '0',
`regen_percent` tinyint(3) unsigned NOT NULL DEFAULT '0',
`gold_min` int(11) NOT NULL DEFAULT '0',
`gold_max` int(11) NOT NULL DEFAULT '0',
`exp` int(10) unsigned NOT NULL DEFAULT '0',
`def` smallint(5) unsigned NOT NULL DEFAULT '0',
`attack_speed` smallint(6) unsigned NOT NULL DEFAULT '100',
`move_speed` smallint(6) unsigned NOT NULL DEFAULT '100',
`aggressive_hp_pct` tinyint(3) unsigned NOT NULL DEFAULT '0',
`aggressive_sight` smallint(10) unsigned NOT NULL DEFAULT '0',
`attack_range` smallint(5) unsigned NOT NULL DEFAULT '0',
`drop_item` int(10) unsigned NOT NULL DEFAULT '0',
`resurrection_vnum` int(10) unsigned NOT NULL DEFAULT '0',
`enchant_curse` tinyint(4) unsigned NOT NULL DEFAULT '0',
`enchant_slow` tinyint(4) unsigned NOT NULL DEFAULT '0',
`enchant_poison` tinyint(4) unsigned NOT NULL DEFAULT '0',
`enchant_stun` tinyint(3) unsigned NOT NULL DEFAULT '0',
`enchant_critical` tinyint(3) unsigned NOT NULL DEFAULT '0',
`enchant_penetrate` tinyint(3) unsigned NOT NULL DEFAULT '0',
`resist_sword` tinyint(4) NOT NULL DEFAULT '0',
`resist_twohand` tinyint(4) NOT NULL DEFAULT '0',
`resist_dagger` tinyint(4) NOT NULL DEFAULT '0',
`resist_bell` tinyint(4) NOT NULL DEFAULT '0',
`resist_fan` tinyint(4) NOT NULL DEFAULT '0',
`resist_bow` tinyint(4) NOT NULL DEFAULT '0',
`resist_fire` tinyint(4) NOT NULL DEFAULT '0',
`resist_elect` tinyint(4) NOT NULL DEFAULT '0',
`resist_magic` tinyint(4) NOT NULL DEFAULT '0',
`resist_wind` tinyint(4) NOT NULL DEFAULT '0',
`resist_poison` tinyint(4) NOT NULL DEFAULT '0',
`dam_multiply` float DEFAULT NULL,
`summon` int(11) DEFAULT NULL,
`drain_sp` int(11) DEFAULT NULL,
`mob_color` int(10) unsigned DEFAULT NULL,
`polymorph_item` int(10) unsigned NOT NULL DEFAULT '0',
`skill_level0` tinyint(3) unsigned DEFAULT NULL,
`skill_vnum0` int(10) unsigned DEFAULT NULL,
`skill_level1` tinyint(3) unsigned DEFAULT NULL,
`skill_vnum1` int(10) unsigned DEFAULT NULL,
`skill_level2` tinyint(3) unsigned DEFAULT NULL,
`skill_vnum2` int(10) unsigned DEFAULT NULL,
`skill_level3` tinyint(3) unsigned DEFAULT NULL,
`skill_vnum3` int(10) unsigned DEFAULT NULL,
`skill_level4` tinyint(3) unsigned DEFAULT NULL,
`skill_vnum4` int(10) unsigned DEFAULT NULL,
`sp_berserk` tinyint(4) NOT NULL DEFAULT '0',
`sp_stoneskin` tinyint(4) NOT NULL DEFAULT '0',
`sp_godspeed` tinyint(4) NOT NULL DEFAULT '0',
`sp_deathblow` tinyint(4) NOT NULL DEFAULT '0',
`sp_revive` tinyint(4) NOT NULL DEFAULT '0',
PRIMARY KEY (`vnum`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;