Volume Shadow copy fails

[Alon]

I'm using ViceVersa Pro 2 build 2011 to backup files from local disk to network drive.
Snce I want it to also back up my Outlook .PST file I set it to use Volume Shadow Copy.
In the log I see error messages notifying it failed to create volume shadow copy. Below part of log.
Can you help?

2009-10-21 09:54:37 : -- Copying to target...
2009-10-21 09:54:37 : Initializing Volume Shadow Copy DLL ...
2009-10-21 09:54:37 : Creating Volume Shadow Copy for C: ...
2009-10-21 09:54:37 : [Volume Shadow Copy creation failed for C:. The system cannot find the path specified.] Error.
2009-10-21 09:54:37 : [Volume Shadow Copy creation failed for C:. The system cannot find the path specified.]Copying file C:\Documents and Settings\alons\NTUSER.DAT <to> ... (3.00MB) [Can not open "C:\Documents and Settings\alons\NTUSER.DAT". The process cannot access the file because it is being used by another process.] [ERROR].

[TGRMN Software]

Hello, are you using ViceVersa PRO 32 bit or 64 bit?
On which windows version?
thanks
_________________
--
TGRMN Software Support
http://www.tgrmn.com
http://www.compareandmerge.com

[Alon]

I'm using windows XP pro version 2002 Service pack 3.

Since it is a 32-bit os, I would be surprised if I'm using 64-bit version of ViceVersa. Anyway, the backup start log says:
2009-10-28 15:31:32 : Version: ViceVersa PRO 2 Build 2011 (SN47)
2009-10-28 15:31:32 : Command Line: "C:\Program Files\ViceVersa Pro 2\ViceVersa.exe" "C:\Documents and Settings\alons\My Documents\ViceVersa PRO 2\profile1.fsf" /hiddenautosync
2009-10-28 15:31:32 : System: Windows XP (Professional), (Terminal Services in Remote Admin Mode), (Multiprocessor Free), (x86-32 Processor) v5.1 Build:2600 Service Pack:3

Thanks,
Alon