For anyone using the Walkthrough mod who wants Quicksave and Quickload to come back:
1) Go to the game/mod folder and open the file
Lain_Overrides.rpy in notepad or some other text editor. For safety you can make a copy of this file first and put it somewhere outside the game folders (like your downloads or desktop) as a backup. Don't save the copy in the mod folder or it'll cause issues.
2) In notepad search for the word "save". It'll take you to this section
View attachment 4227803
3) Between the "Save" and "Prefs" lines insert the below lines. Make sure the new lines have the same spaces at the front so they line up with the others
textbutton _("Q.Save") action QuickSave()
textbutton _("Q.Load") action QuickLoad()
4) It should now look like this
View attachment 4227804
5) Save and exit the file.
You should see Q.Save and Q.Load back in the quick menu.
View attachment 4227784