when using ghost 11.5 we experienced this error when trying to image HP 6530Bs' .
The steps used for using a Ghost 11 Boot CD are:
1. Boot via CD.
2. Exit Ghost (returns to DOS Shell at N: Drv).
3. Type R:\ghost -fnx -ffi
4. The ghost program restarts, then specify multicast, job name, etc as per normal.
Hope this helps!
C