Hi again,
This is a error in /etc/passwd.
To fixing this you need to copy file /etc/passwd by ftp, and change in the first line from:
root:x:0:0:root:/home/root:/bin/bash
to:
root:x:0:0:root:/home/root:/bin/sh
then paste new file in to /etc/
By default busybox don't using bash, only sh or ash
I did this from linux, you should be very careful and not edit linux file in windows. Windows use a different end of line character.
