First of all thanks, for finding and trying the tutorials.
I made the tutorial using VL6.0 standard. I'm assuming from the subject line in your post that you are using VL 6.0 deluxe.
The deluxe version I believe already had KDE 4.2 set-up and ready to go I believe. I'll need another deluxe user to verify, but unfortunately using the tutorial on the Deluxe version probably did more harm than good.
I didn't buy the deluxe version this year, or I would try to duplicate your troubles and offer a fix. Could someone who has VL deluxe confirm for me what KDE set-up is already available? I'll review the tutorial, see what I can find out that may be the cause.