/sys already mounted - livecd doesn't boot

[Arun SAG]

Hi,

I have created a livecd using following kickstart files,

http://sagarun.fedorapeople.org/misc/fedora-live-base.ks
http://sagarun.fedorapeople.org/misc/fedora-live-minimization.ks
http://sagarun.fedorapeople.org/misc/fedora-schools.ks

But when tried to test the iso using virtualbox, I am getting following
error message

http://sagarun.fedorapeople.org/misc/sysfs_screenshot.png

Am i missing something?