i had successfully burned 1/2 a dozen dvd's and then i kept getting "unspecified burner error" and after some "fixes" i now get a "unspecified target error". i have performed the fix here http://support.microsoft.com/default.aspx?...5BLN%5D;q314060 thinking that may be the issue. the drive will burn dvd+rw's but not dvd+r's. here's one of my many nero logs.
thank you for your time.

Windows XP 5.1
IA32
WinAspi: File 'Wnaspi32.dll': Ver=4.71 (0002), size=45056 bytes, created 7/16/2002 8:20:56 PM
ahead WinASPI: File 'C:\Program Files\Ahead\Nero\Wnaspi32.dll': Ver=2.0.1.74, size=164112 bytes, created 10/26/2004 6:35:34 PM
Nero Version: 6.6.0.18
Internal Version: 6, 6, 0, 18e

Recorder: <PHILIPS DVD+RW SDVD6004> Version: 1.06 - HA 1 TA 0 - 6.6.0.18
Adapter driver: <atapi> HA 1
Drive buffer : 8192kB
Bus Type : default (0) -> ATAPI, detected: ATAPI
CD-ROM: <PHILIPS DVD+RW SDVD6004 >Version: 1.06 - HA 1 TA 0 - 6.6.0.18
Adapter driver: <atapi> HA 1

=== Scsi-Device-Map ===DiskPeripheral : FUJITSU MHT2060AT PL atapi Port 0 ID 0 DMA: On
CdRomPeripheral : PHILIPS DVD+RW SDVD6004 atapi Port 1 ID 0 DMA: On

=== CDRom-Device-Map ===
PHILIPS DVD+RW SDVD6004 D: CDRom0
=======================

AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 74448896 (0) Byte
ShowDrvBufStat : 0
BUFE : 0
Physical memory : 511MB (523496kB)
Free physical memory: 163MB (167204kB)
Memory in use : 68 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

13.6.2006
UDF/ISO compilation
2:44:30 PM #1 Phase 112 File dlgbrnst.cpp, Line 1832
DVD-Video files reallocation started

2:44:30 PM #2 Phase 114 File dlgbrnst.cpp, Line 1832
DVD-Video files reallocation completed (no file modified)

2:44:30 PM #3 Text 0 File Isodoc.cpp, Line 6359
UDF document burn settings
------------------------------------------
Determine maximum speed : FALSE
Simulate : FALSE
Write : TRUE
Finalize CD : TRUE
Multisession : FALSE
Burning mode : DAO
Mode : 1
UDF Mode : UDF/ISO bridge
UDF Revision : 1.02
UDF Partition Type : physical
ISO Level : 1 (Max. of 11 = 8 + 3 char)
Character set : ISO 9660
Joliet :FALSE
Allow pathdepth more than 8 directories : TRUE
Allow more than 255 characters in path : TRUE
Write ISO9660 ;1 file extensions : TRUE

2:44:30 PM #4 Phase 111 File dlgbrnst.cpp, Line 1832
DVD-Video files sorted

2:44:30 PM #5 Text 0 File Reader.cpp, Line 127
Reader running

2:44:30 PM #6 Text 0 File Writer.cpp, Line 122
Writer PHILIPS DVD+RW SDVD6004 running

2:44:30 PM #7 ISO9660GEN -11 File geniso.cpp, Line 3309
First writeable address = 0 (0x00000000)

2:44:30 PM #8 ISO9660GEN -11 File geniso.cpp, Line 3309
First writeable address = 0 (0x00000000)

2:44:30 PM #9 Text 0 File Burncd.cpp, Line 3233
Turn on Disc-At-Once, using DVD media

2:44:31 PM #10 Text 0 File DlgWaitCD.cpp, Line 270
Last possible write address on media: 2295103 (510:01.28, 4482MB)
Last address to be written: 2286159 (508:02.09, 4465MB)

2:44:31 PM #11 Text 0 File DlgWaitCD.cpp, Line 282
Write in overburning mode: NO (enabled: CD)

2:44:31 PM #12 Text 0 File DlgWaitCD.cpp, Line 2483
Recorder: PHILIPS DVD+RW SDVD6004, Media type: DVD+R

2:44:31 PM #13 Text 0 File DlgWaitCD.cpp, Line 448
>>> Protocol of DlgWaitCD activities: <<<
=========================================

2:44:31 PM #14 Text 0 File ThreadedTransferInterface.cpp, Line 838
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 ()
2 indices, index0 (150) not provided
original disc pos #0 + 2286160 (2286160) = #2286160/508:2.10
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 2286160 blocks [PHILIPS DVD+RW SDVD6004]
--------------------------------------------------------------

2:44:31 PM #15 Text 0 File ThreadedTransferInterface.cpp, Line 1051
Prepare recorder [PHILIPS DVD+RW SDVD6004] 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 4682055680, ISRC ""
DAO layout:
===========
__Start_|____Track_|_Idx_|_CtrlAdr_|_RecDep__________
0 | lead-in | 0 | 0x41 | 0x00
0 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
2286160 | lead-out | 1 | 0x41 | 0x00

2:44:31 PM #16 Phase 24 File dlgbrnst.cpp, Line 1832
Caching of files started

2:44:31 PM #17 Text 0 File Burncd.cpp, Line 4122
Cache writing successful.

2:44:31 PM #18 Phase 25 File dlgbrnst.cpp, Line 1832
Caching of files completed

2:44:31 PM #19 Phase 36 File dlgbrnst.cpp, Line 1832
Burn process started at 2.4x (3,324 KB/s)

2:44:31 PM #20 Text 0 File ThreadedTransferInterface.cpp, Line 2661
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

2:44:31 PM #21 SCSI -1066 File Cdrdrv.cpp, Line 1182
SCSI Exec, HA 1, TA 0, LUN 0, buffer 0x04C70600
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x05 (KEY_ILLEGAL_REQUEST)
Sense Code: 0x24
Sense Qual: 0x00
CDB Data: 0xAD 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x04 0x00 0x00
Sense Data: 0x70 0x00 0x05 0x00 0x00 0x00 0x00 0x0C
0x00 0x00 0x00 0x00 0x24 0x00

2:44:31 PM #22 Text 0 File DVDPlusRW.cpp, Line 659
Start write address at LBA 0
DVD high compatibility mode: Yes

2:51:49 PM #23 SCSI -400 File Cdrdrv.cpp, Line 1436
SCSI Exec, HA 1, TA 0, LUN 0, buffer 0x04440000
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x03 (KEY_MEDIUM_ERROR)
Sense Code: 0x90
Sense Qual: 0x92
CDB Data: 0x2A 0x00 0x00 0x09 0x52 0xE0 0x00 0x00 0x20 0x00 0x00 0x00
Sense Data: 0xF0 0x00 0x03 0x00 0x09 0x49 0x30 0x0C
0x00 0x00 0x00 0x00 0x90 0x92

2:51:49 PM #24 CDR -400 File Writer.cpp, Line 311
Unspecified target error

2:51:49 PM #25 Text 0 File ThreadedTransfer.cpp, Line 228
all writers idle, stopping conversion

2:51:49 PM #26 Text 0 File ThreadedTransfer.cpp, Line 222
conversion idle, stopping reader

2:53:18 PM #27 Phase 38 File dlgbrnst.cpp, Line 1832
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 'Drivers\ASPI32.SYS': Ver=4.71 (0002), size=16877 bytes, created 7/16/2002 7:53:02 PM
File 'Drivers\PXHELP20.SYS': Ver=2.03.28a, size=20640 bytes, created 3/11/2005 5:28:09 PM (Prassi/Veritas driver for win 2K)
File 'Drivers\atapi.sys': Ver=5.1.2600.2180 (xpsp_sp2_rtm.040803-2158), size=95360 bytes, created 8/4/2004 12:59:42 AM (Adapter driver for rec)

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

Hi pimfram.
The "fix" you applied should really only be done if you receive one of the specific error codes mentioned in the article or if the drive no longer appears in windows. As the article states, you may need to re-install your burning software as well after removing the reg entries.
That being said, your nero log says:


That speed is only used with dual layer (DL) media.
Are these DVD+R's dual layer?
Your drive does not support dual layer nor is there a firmware upgrade above what you have (Version: 1.06) to address the issue.
Let us know.

no dl just dvd+r. i will try to reinstall nero this evening.

You can do that if you like but I would be very surprised if it helped at all with the +R media problem.
That's most likely due to 1 of 2 things. Either your burner isn't recognizing the correct media, in which case try a different brand, or it's the method in which you're using.
Couple things you can check real quick.
Insert one of the blank +R's in your drive.
Open the Nero info tool.
On the drive tab there should be a check mark next to DVD+R under both read and write features like the image below:



On the disc tab, it should be correctly identifying the blank disc:



If it checks out there, when you're setting up for the burn, select DVD-ROM [ISO].
Under write speed set it to 2X, the max for your burner. sample below: