This will help to get rid red errors in game when you received an item and get rid of crash when you drag item.
Download: https://pixeldrain.com/u/F5BMhkGU (Latest 26 June 2025)
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Please remove sprite and texture folder in data.grf to slice down a game file size. (Do a backup first just for safety)
Thanks to @KingarteR for finding mostly client database files.
Added sprite error checker. (Will read all resourceName.txt and collection folder in Resources folder)
Can using in 8.0 (Tutorial: https://youtu.be/_fZOMT6P9T8)
Custom the map isn't need to follow any official database, this map can rename into wow_prontera or anything for safety implementation if you had concern to it.
Original poster didn't do anything wrong from my point.
doc/script_commands.txt already explained how it work. Just try edit some existed scripts first, you'll learn by a bit each time.
I must say I'm able to coding because of private Ragnarok Online server too.