This line of code checks the following tables
schema_config.char_db, schema_config.hotkey_db, schema_config.scdata_db, schema_config.cart_db,
schema_config.inventory_db, schema_config.charlog_db,
schema_config.char_reg_str_table, schema_config.char_reg_num_table, schema_config.acc_reg_str_table,
schema_config.acc_reg_num_table, schema_config.skill_db, schema_config.interlog_db, schema_config.memo_db,
schema_config.guild_db, schema_config.guild_alliance_db, schema_config.guild_castle_db,
schema_config.guild_expulsion_db, schema_config.guild_member_db,
schema_config.guild_skill_db, schema_config.guild_position_db, schema_config.guild_storage_db,
schema_config.party_db, schema_config.pet_db, schema_config.friend_db, schema_config.mail_db,
schema_config.auction_db, schema_config.quest_db, schema_config.homunculus_db, schema_config.skill_homunculus_db,
schema_config.mercenary_db, schema_config.mercenary_owner_db,
schema_config.elemental_db, schema_config.ragsrvinfo_db, schema_config.skillcooldown_db, schema_config.bonus_script_db,
schema_config.clan_table, schema_config.clan_alliance_table, schema_config.mail_attachment_db, schema_config.achievement_table
so its either you have corrupted main.sql in which case you should try to redownload the whole server since there might be some files which are corrupted too.
or you haven't properly added the main.sql in your sql database
prontera,156,181,4 script Inflation NPC 528,{
set .@npcn$,"INFLATION NPC";
set .@price,1000;
set .@items,6498;
/////////////////
if (howmanytimesbought<1){set howmanytimesbought,1;}
set .@pricenow,howmanytimesbought*.@price;
mes .@npcn$;
mes "Buy my "+getitemname(.@items)+"I increase price everytime you buy";
mes "Price now is "+.@pricenow+"";
next;
switch(select("I wanna buy","I hate you")){
case 1:
set Zeny, Zeny -.@pricenow;
getitem 909,1;
set howmanytimesbought,howmanytimesbought+1;
next;
close;
break;
case 2:
close;
break;
}
end;
}