No worries. Your data should all be in a .xp3 file, so it'll unpack images, music, sprites etc, as well as the script.
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• On the GitHub page for krkrextract download ALL of the files, make sure you have everything, it won't work unless you have all 3
> KrkrExtract.Core.dll
> KrkrExtract.Lite.exe
> KrkrExtract.UI.Lite.dll
• Copy and paste all of these into the same folder as your game folder.
• Drag your game (the .exe for running your game) over and drop it onto the "KrKrExtract.Lite.exe" file. The game should then open and the krkrextract window will open alongside it.
• In the krkrextract window that opens, you can drag and drop your data.xp3 file onto it, and it'll begin unpacking/decrypting it for you, once it finishes, you'll get a new folder where the new files are. Inside you'll find where the script files are, the .ks script file should now be openable and readable with notepad/notepad++