When I execute k3b through command line it shows the below error

k3b
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/tmp-vibin-top: Permission denied
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/share: Permission denied
trying to create local folder /home/vibin/.kde/socket-vibin-top: Permission denied
trying to create local folder /home/vibin/.kde/socket-vibin-top: Permission denied
kdeinit: Aborting. bind() failed: : Permission denied
Could not bind to socket '/home/vibin/.kde/socket-vibin-top/kdeinit__0'


This is what it shows , I cant execute through menu , thats why I thought of command line , but I can have this through root mode , but I want it in normal user mode .
Do I need to have anything more added to this software?

Ok, so modify that directory to allow your user to access it. The error is quite clear...your user ID doesn't have permission to write to "/home/vibin/.kde"

Look at the permissions on that directory, and either use chmod to allow writing, or chown to change the owner to be your user ID. "chmod 755" on that directory, and "chown vibin" should do it. Read the man pages for those commands.

If you flop back and forth between root, these things happen. Root should only be used sparingly...

Thank You , it was a problem of chmod . It worked .. But just one question , what made this problem , I havent change any permissions but will it change it by itself ?

Re-read my original post. As I said, if you go back and forth between root and your user, things like this can happen. Root is for very occasional use only, and only when you REALLY need it.