Scripts that signal players to join an event at a specific times or often use a map, or an instance map to help players farm items. Example: Clucker event, Disguise event, Gold room, MvP room, Chess script
Scripts that rewards players for hunting monsters and/or gathering items, shops, or simply want to show simple functions and algorithms of scripting. Example: Headgear exchanger, Quest scripts, Mall NPC, Weapon dealer, Decimal Point System, Sorting Algorithm
My guess would be that your lua files are not compatible with your client version.
OR those skills have invalid settings in the lua file.
The error basically says that "AttackRange" is not set for this skill. Which may be because it is missing or because it was not properly registered by the lua functions.