Lubuntu: "The specified directory is not valid"

Question

A little while ago, I removed a few of the default folders from my home directory on my Lubuntu machine. Now, whenever I log in, I get a warning message that says "The specified directory is not valid". The really weird thing is that even after I re-created those folders, the message persists.

What is causing this, and how do I fix it?

Info edit: My ~/.config/user-dirs.dirs showed something like this:

# This file is written by xdg-user-dirs-update
# If you want to change or add directories, just edit the line you're
# interested in. All local changes will be retained on the next run
# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
# absolute path. No other format is supported.
# 
XDG_DOCUMENTS_DIR="$HOME/Documents"
XDG_PICTURES_DIR="$HOME/Pictures"
XDG_DESKTOP_DIR="$HOME/"
XDG_DOWNLOAD_DIR="$HOME/"
XDG_TEMPLATES_DIR="$HOME/"
XDG_PUBLICSHARE_DIR="$HOME/"
XDG_MUSIC_DIR="$HOME/"
XDG_VIDEOS_DIR="$HOME/"

I commented out the lines that ended with a trailing slash, ran xdg-user-dirs-update, and rebooted. The directories were recreated and message went away, but I would like to know how I can get rid of both the message and the directories at the same time.

Solution

I'm using Lubuntu 13.10. I removed three of the "default" subfolders in my home folder without any apparent ill-effect but see What happens if I delete the default folders in my home folder?.

• I deleted the following folders:
  • /home/vasa1/Music
  • /home/vasa1/Templates
  • /home/vasa1/Videos
• I edited ~/.config/users-dir.dir to comment out lines referring to the three subfolders
• I edited /etc/xdg/user-dirs.conf to change the line with Enabled=True to Enabled=False
• I edited /etc/xdg/user-dirs.defaults to reflect the changes made to ~/.config/users-dir.dir

These changes persist after a reboot.