Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding General Can't find texture

I'm just trying to edit one of the textures, so I used the converter to extract textures.pak

I couldn't find the textures I wanted to edit in there, though. When I try to extract textures_1, textures_2, and so on I get this error message:

Internal Error!
System.IO.InvalidDataException: No valid signature found in package file
at LSLib.LS.PackageReader.Read()
at LSLib.LS.Packager.UncompressPackage(String packagePath, String outputPath)
at ConverterApp.PackagePane.extractPackageBtn_Click
(Object sender,EventArgs e)

...does anyone know how to extract the other texture files? I can't seem to figure it out.