Backtrack 5 KDE startx Failed To Load Error and Solution

I've downloaded Backtrack Linux version 5 KDE desktop 64 bit. To start a graphical interface I' typed startx command. But it failed with the following error message:

BackTrack Linux 5 64bits Vmware Workstation Installation

How do I fix this problem and install Backtrack Linux version 5 KDE desktop on my hard disk?

Backtrack Linux is a penetration testing and security auditing Linux distribution. You can run it from Live CD or install it on the hard disk. This is well known bug^[1] in Backtrack Linux v5 KDE 64 bit. To fix this problem cd to /root/.kde/ and delete *.kcache files in the following directories:
[a] /root/.kde/cache-bt
[b] /root/.kde/cache-root
Type the following find commands to find and delete .kcache files:
# cd /root/.kde/
# find . -type f -iname "*.kcache" -delete
Type the following command to start KDE desktop:
# startx

Backtrack 5 KDE Linux Deskop Screenshot

To install click on "Install Backtrack" icon.