Problem in installing Kubuntu using wubi

[prateeksahu]

I have installed Kubuntu 11.04 using wubi(in windows)....

But when I am running Kubuntu it is showing the following error.

try(hd0,0) : FAT16 : NO WUBLDIR
try(hd0,1) : NTFS35 : NO wubldir
try(hd0,3) : NTFS35 :error "prefix" is not set

What should I do