Echec gravure 2 films AVI sur DVD avec NERO

Bonjour à tous

Mon souci: je programme avec Nero la gravure de 2 fichiers AVI.
Il y a 2.5 Go
Je mets tout en place, menu, etc...
Je lance la gravure...
29 mn, la gravure échoue avec le report suivant (fin)

[19:03:18] (démarrage) ...............
.........
[19:32:08] DVDEngine
[19:32:08] DVDEngine 19:32:08 #24 CDR -1064 File SessionUtils.cpp, Line 49
[19:32:08] DVDEngine Invalid block address
[19:32:08] DVDEngine
[19:32:08] DVDEngine 19:32:08 #25 Text 0 File BurnAtOnceRecorder.cpp, Line 712
[19:32:08] DVDEngine Failed to release fragment at 3760
[19:32:08] DVDEngine
[19:32:08] DVDEngine 19:32:08 #26 Text 0 File BurnAtOnceRecorder.cpp, Line 2588
[19:32:08] DVDEngine Failed to release fragment at 3760
[19:32:08] DVDEngine
[19:32:08] DVDEngine 19:32:08 #27 Phase 179 File APIProgress.cpp, Line 276
[19:32:08] DVDEngine Writing file to disc failed
[19:32:08] DVDEngine
[19:32:08] DVDEngine Existing drivers:
[19:32:08] DVDEngine File 'Drivers\PXHELP20.SYS': Ver=2.02.62a, size=20016 bytes, created 03/06/2004 19:25:18 (Prassi/Veritas driver for win 2K)
[19:32:08] DVDEngine Registry Keys:
[19:32:08] DVDEngine HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)
[19:32:08] DVDEngine _Xcept (): Signalling Exception: 129 NeroBAOCloseFile() returned error condition _BAOContext::CloseFile()
[19:32:08] DVDEngine ****END: Create - VTSI#1
[19:32:08] DVDEngine **END: _DVDVideo - Create
[19:32:08] DVDEngine ########################################################################################
[19:32:08] DVDEngine ERROR
[19:32:08] DVDEngine cause: 129 (neroapi_call_failed)
[19:32:08] DVDEngine source: NeroBAOCloseFile() returned error condition
[19:32:08] DVDEngine description: _BAOContext::CloseFile()
[19:32:08] DVDEngine ########################################################################################
[19:32:08] DVDEngine **BEGIN: IDVDSessionBaseImpl - Clear
[19:32:08] DVDEngine **END: IDVDSessionBaseImpl - Clear
[19:32:08] DVDEngine END: IDVDVideoSessionImpl - CreateDisc
[19:32:11] NeroAPI La gravure a échoué à 4x (5 540 Ko/s)
[19:32:11] DVDEngine BEGIN: IDVDSessionBaseImpl - EndDiscAccess
[19:32:11] DVDEngine ..Flags=0
[19:32:11] DVDEngine **BEGIN: _MediaAccess::Release ()
[19:32:11] DVDEngine ****BEGIN: _MediaAccess::~_MediaAccess ()
[19:32:11] DVDEngine ****END: _MediaAccess::~_MediaAccess ()
[19:32:11] DVDEngine **END: _MediaAccess::Release ()
[19:32:11] DVDEngine END: IDVDSessionBaseImpl - EndDiscAccess
[19:32:11] DVDEngine BEGIN: IDVDSessionBaseImpl - RegisterCallback
[19:32:11] DVDEngine ..Session callback unregistered...
[19:32:11] DVDEngine END: IDVDSessionBaseImpl - RegisterCallback
[19:32:11] GCHW Node added: Mélangeur audio Wave de noyau Microsoft
[19:47:59] GCHW Node removed: Mélangeur audio Wave de noyau Microsoft

Quelqu'un peut m'aider?
Merci pour les lumières.