You can try 2 things: 1) type: mv .kde .kdebackup
and try to enter KDE 4 again.
2) If point 1 doesn't solve the problem, make sure that all the required packages are installed. sudo apt-get install --reinstall kubuntu-desktop
Let me know how it goes.
You can try 2 things:
1) type:
mv .kde .kdebackup
and try to enter KDE 4 again.
2) If point 1 doesn't solve the problem, make sure that all the required packages are installed.
sudo apt-get install --reinstall kubuntu-desktop
Let me know how it goes.