[jonnyl]

Those "._"-files are created by MacOS and will not show in Finder. They are also hidden in KOReader File browser, even when "show hidden files" and "show unsupported files" are selected. (@hius07: It might be a good idea to also hide them from the Styletweaks menu.)

@Ebookus: You can delete the file on a Windows Computer for example. On MacOS, you can't delete it in Finder. Here's how you delete it in Terminal:

1. Open the Styletweaks folder of your ereader in Finder.

2. On the bottom of the Finder window where the path is shown, right-click on the Styletweaks folder and select Copy "Styletweaks" as Pathname

3. Open Terminal

4. Change to Styletweaks directory: type cd and paste the pathname from your clipboard.

5. By typing ls -a it will show all files in the directory, including the hidden one you want to delete.

6. Type rm ._Economist.css (or whatever your file is named. If there is a space in the filename, you'll have to put it inside " quotes.

7. Close Terminal and disconnect ereader.