illegal disc error on nero-need help

can someone help me i am trying to burn some video files to a dvd and when i start the burn in nero i have this error pop up everytime and i cant figure it out it would be very much appreciated if someone could help me with this error i am having.

this is the error:



Windows XP 5.1
IA32
WinAspi: -
ahead WinASPI: File 'C:\Program Files\Nero\Nero 7\Core\Wnaspi32.dll': Ver=2.0.1.74, size=164112 bytes, created 11/2/2004 12:54:32 PM

NT-SPTI used
Nero Version: 7.0.8.2
Internal Version: 7, 0, 8, 2

Recorder: <_NEC DVD+-RW ND-6500A> Version: 202C - HA 1 TA 0 - 7.0.8.2
Adapter driver: <IDE> HA 1
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ?
CD-ROM: <_NEC DVD+-RW ND-6500A>Version: 202C - HA 1 TA 0 - 7.0.8.2
Adapter driver: <IDE> HA 1

=== Scsi-Device-Map ===
DiskPeripheral : TOSHIBA MK4026GAX atapi Port 0 ID 0 DMA: On
CdRomPeripheral : _NEC DVD+-RW ND-6500A atapi Port 0 ID 1 DMA: On

=== CDRom-Device-Map ===
_NEC DVD+-RW ND-6500A D: CDRom0
=======================

AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 39845888 (0) Byte
BUFE : 0
Physical memory : 247MB (253308kB)
Free physical memory: 40MB (41444kB)
Memory in use : 83 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

23.8.2006
ISO compilation
6:31:20 PM #1 Text 0 File Isodoc.cpp, Line 6423
Iso document burn settings
------------------------------------------
Determine maximum speed : FALSE
Simulate : FALSE
Write : TRUE
Finalize CD : TRUE
Multisession : FALSE
Burning mode : DAO
Mode : 1
ISO Level : 1 (Max. of 11 = 8 + 3 char)
Character set : ISO 9660
Joliet : TRUE
Allow pathdepth more than 8 directories : TRUE
Allow more than 255 characters in path : TRUE
Write ISO9660 ;1 file extensions : TRUE

6:31:20 PM #2 Text 0 File ThreadedTransfer.cpp, Line 531
ReadBuffer-Pipe got 38912KB of Memory

6:31:20 PM #3 Text 0 File Reader.cpp, Line 124
Reader running

6:31:20 PM #4 ISO9660GEN -11 File Geniso.cpp, Line 3312
First writeable address = 0 (0x00000000)

6:31:20 PM #5 Text 0 File Burncd.cpp, Line 3353
Turn on Disc-At-Once, using DVD media

6:31:22 PM #6 Text 0 File DlgWaitCD.cpp, Line 289
Last possible write address on media: 2298495 (510:46.45, 4489MB)
Last address to be written: 2211759 (491:30.09, 4319MB)

6:31:22 PM #7 Text 0 File DlgWaitCD.cpp, Line 301
Write in overburning mode: NO (enabled: CD)

6:31:22 PM #8 Text 0 File DlgWaitCD.cpp, Line 2715
Recorder: _NEC DVD+-RW ND-6500A, Media type: DVD-R
Disc Manufacturer: CMC MA - G. AM3
Disc Application Code: 64, Disc Physical Code: 193

6:31:22 PM #9 Text 0 File DlgWaitCD.cpp, Line 473
>>> Protocol of DlgWaitCD activities: <<<
=========================================

6:31:22 PM #10 Text 0 File ThreadedTransferInterface.cpp, Line 847
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 ()
2 indices, index0 (150) not provided
original disc pos #0 + 2211760 (2211760) = #2211760/491:30.10
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 2211760 blocks [D: _NEC DVD+-RW ND-6500A]
--------------------------------------------------------------

6:31:22 PM #11 Text 0 File ThreadedTransferInterface.cpp, Line 1059
Prepare recorder [D: _NEC DVD+-RW ND-6500A] for write in CUE-sheet-DAO
DAO infos:
==========
MCN: ""
TOCType: 0x00; Session Closed, disc fixated
Tracks 1 to 1:
1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 0 4529684480, ISRC ""
DAO layout:
===========
__Start_|____Track_|_Idx_|_CtrlAdr_|_RecDep__________
0 | lead-in | 0 | 0x41 | 0x00
0 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
2211760 | lead-out | 1 | 0x41 | 0x00

6:31:22 PM #12 Text 0 File SCSIPassThrough.cpp, Line 39
SPTILockVolume - completed successfully for FCTL_LOCK_VOLUME

6:31:22 PM #13 Text 0 File SCSIPassThrough.cpp, Line 84
SPTIDismountVolume - completed successfully for FSCTL_DISMOUNT_VOLUME

6:31:22 PM #14 Phase 24 File dlgbrnst.cpp, Line 1730
Caching of files started

6:31:22 PM #15 Text 0 File Burncd.cpp, Line 4187
Cache writing successful.

6:31:22 PM #16 Phase 25 File dlgbrnst.cpp, Line 1730
Caching of files completed

6:31:22 PM #17 Phase 36 File dlgbrnst.cpp, Line 1730
Burn process started at 2.4x (3,324 KB/s)

6:31:23 PM #18 Text 0 File ThreadedTransferInterface.cpp, Line 2707
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

6:31:23 PM #19 Text 0 File DVDR.cpp, Line 2760
Recording mode: Sequential Recording Mode

6:31:23 PM #20 Text 0 File DVDR.cpp, Line 2916
Start write address at LBA 0
DVD high compatibility mode: Yes

6:31:23 PM #21 Text 0 File Cdrdrv.cpp, Line 8661
---- DVD Structure: Physical Format Information (00h) ----
Media Type: 0, Layer: 0, Address: 0 (0 h), AGID: 0; Length: 2050
Book Type: DVD-R (2), Part Version: 2.0x (5), Extended Part Version: 2.1 (33)
Disc Size: 120 mm, Maximum Rate: <not specified> (F h)
Number of Layers: 1, Track Path: Parallel Track Path (PTP), Layer Type: recordable
Linear Density: 0,267 um/bit, Track Density: 0,74 um/track
Starting Physical Sector Number of Data Area: 30000 h (DVD-ROM, DVD-R/-RW, DVD+R/+RW)
End Physical Sector Number of Data Area: 26127F h
End Sector Number in Layer 0: 0 h (LBN: FFFD0000 h, 4193920 MB)
Data in Burst Cutting Area (BCA) does not exist
Start sector number of the current Border-Out: 2FE10 h
Start sector number of the next Border-In: 2FFA0 h
Media Specific [16..63]:
00 60 00 10 20 30 40 50 - 00 00 00 21 00 00 00 00 .`...0@P...!....
00 02 FE 10 00 02 FF A0 - 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................

6:31:24 PM #22 SPTI -1046 File SCSIPassThrough.cpp, Line 290
D: CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1046)
Sense Key: 0x05 (KEY_ILLEGAL_REQUEST)
Sense Code: 0x30
Sense Qual: 0x05
CDB Data: 0x53 00 00 00 00 00 21 BF B0 00 00 00
Sense Area: 0x70 00 05 00 00 00 00 0A 00 00 00 00 30 05

6:31:24 PM #23 CDR -1046 File ThreadedTransferInterface.cpp, Line 1799
Illegal disc
D: _NEC DVD+-RW ND-6500A

6:31:24 PM #24 TRANSFER -27 File ThreadedTransferInterface.cpp, Line 1799
Could not perform start of Disc-at-once

6:31:24 PM #25 Phase 38 File dlgbrnst.cpp, Line 1730
Burn process failed at 2.4x (3,324 KB/s)


Existing drivers:
File 'Drivers\ADPU160M.SYS': Ver=v3.60a (Lab01_N(johnstra).010529-2218), size=101888 bytes, created 8/17/2001 2:07:32 PM
File 'WNASPINT.DLL': Ver=V1.18, size=57344 bytes, created 8/22/2006 6:52:19 PM
File 'Drivers\PXHELP20.SYS': Ver=2.03.32a, size=20640 bytes, created 7/26/2006 9:05:53 PM (Prassi/Veritas driver for win 2K)

Registry Keys:
HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)