Unallocated partition? Is it a bug?

Can someone try to replicate this on another machine? I checked on mine and it happend 3 times.

Steps to take:
1. Install windows XP
2. Install FirstDefence-ISR
3. Import a Vista snapshot
4. Boot on the Vista snapshot -> gives an Unallocated partition.

No problem with the opposite steps:
1. Install windows Vista
2. Install FirstDefence-ISR
3. Import a XP snapshot
4. Boot on the XP snapshot -> everything works fine


Thanks,
Panagiotis

 

Bug probably related with the one mentioned above.

Steps taken:
1. Installed Vista
2. Installed FD-ISR
3. Imported snapshot of windows xp
4. Booted on the xp snapshot
5. Removed snapshot of vista
6. on the reboot I get the following error:

Error: GMAL-01
FirstDefence-ISR ERROR - Press any key to boot windows

A disk error occured
Press Ctrl+Alt+Del to restart


I used a bartPE disk to access the drive. After running chkdsk from bartpe enviroment I get:
chkdsk c:
The type of the file system is NTFS
Unable to determine volume version and state. CHKDSK aborted

Anybody has a clue why this happened?
Why a removed snapshot took the ntfs table out?