I have an Acer Aspire 4720Z laptop with Windows XP. For the past few weeks my Nero is giving problem. I had Nero 9 when the problem started; whenever I started writing dvd, Nero will burn upto say 3% or 7% and then show error message. So I uninstalled it, used Nero cleaning tool, installed Nero 8 but the problem remained. It began showing message like " Session fixation error G:HL-DT-ST DVDRAM GSA T40N" . Then I changed to Nero 6; but still the same problem. I use various DVD makes available in India like Moserbaer, Writex….earlier also I used to write them having no problem. Another thing I have noted is that even after uninstalling, Nero DriveSpeed, Nero InfoTool, Nero DiscSpeed, Nero ControlCenter stays in Control Panel> Add and Remove Programs dialog box, without mentioning there sizes. Can't remove them. I am attaching the Nero 6 error log……..I have done everything possible – like defragmented my drives, checked IDE ATA/ATAPI controllers>IDE channels>Transfer mode DMA, ran ForceASPI. Can anyone plz help me? Windows XP 5.1 IA32 WinAspi: - ahead WinASPI: File 'D:\Program Files\Nero\Nero\Wnaspi32.dll': Ver=2.0.1.74, size=164112 bytes, created 10/26/2004 5:35:34 PM Nero Version: 6.6.0.8 (Nero Express) Recorder: Version: JP01 - HA 0 TA 0 - 6.6.0.8 Adapter driver: HA 0 Drive buffer : 2048kB Bus Type : via Inquiry data (1) -> ATAPI, detected: ATAPI Connected to MMC as unknown drive with class-nr : 1 Drive is autodetected - recorder class: Std. MMC recorder CD-ROM: Version: JP01 - HA 0 TA 0 - 6.6.0.8 Adapter driver: HA 0 === Scsi-Device-Map === CdRomPeripheral : HL-DT-ST DVDRAM GSA-T40N atapi Port 0 ID 0 DMA: On DiskPeripheral : WDC WD1600BEVT-22ZCT0 atapi Port 1 ID 0 DMA: On === CDRom-Device-Map === HL-DT-ST DVDRAM GSA-T40N G: CDRom0 ======================= AutoRun : 1 Excluded drive IDs: WriteBufferSize: 83886080 (0) Byte ShowDrvBufStat : 0 BUFE : 0 Physical memory : 2038MB (2087276kB) Free physical memory: 1399MB (1432680kB) Memory in use : 31 % Uncached PFiles: 0x0 Use Inquiry : 1 Global Bus Type: default (0) Check supported media : Disabled (0) 6.11.2011 ISO compilation 12:17:13 PM #1 Text 0 File Isodoc.cpp, Line 6172 Iso document burn settings —————————————— Determine maximum speed : FALSE Simulate : FALSE Write : TRUE Finalize CD : FALSE Multisession : TRUE Multisession type: : Continue multisession 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 12:17:13 PM #2 Text 0 File Reader.cpp, Line 127 Reader running 12:17:13 PM #3 Text 0 File Writer.cpp, Line 122 Writer HL-DT-ST DVDRAM GSA-T40N running 12:17:13 PM #4 ISO9660GEN -11 File geniso.cpp, Line 3293 First writeable address = 0 (0x00000000) 12:17:14 PM #5 Text 0 File Burncd.cpp, Line 3153 Turn on Disc-At-Once, using DVD media 12:17:17 PM #6 Text 0 File DlgWaitCD.cpp, Line 259 Last possible write address on media: 2298495 (510:46.45, 4489MB) Last address to be written: 1804031 (400:53.56, 3523MB) 12:17:17 PM #7 Text 0 File DlgWaitCD.cpp, Line 271 Write in overburning mode: NO (enabled: CD) 12:17:17 PM #8 Text 0 File DlgWaitCD.cpp, Line 2316 Recorder: HL-DT-ST DVDRAM GSA-T40N, Media type: DVD-R Disc Manufacturer: MBI 01 - RG40 Disc Application Code: 64, Disc Physical Code: 193 12:17:17 PM #9 Text 0 File DlgWaitCD.cpp, Line 433 >>> Protocol of DlgWaitCD activities: <<< ========================================= 12:17:17 PM #10 Text 0 File ThreadedTransferInterface.cpp, Line 830 Setup items (after recorder preparation) 0: TRM_DATA_MODE1 () 2 indices, index0 (150) not provided original disc pos #0 + 680608 (680608) = #680608/151:14.58 relocatable, disc pos for caching/writing not required/ required, no patch infos -> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 680608 blocks [HL-DT-ST DVDRAM GSA-T40N] ————————————————————– 12:17:17 PM #11 Text 0 File ThreadedTransferInterface.cpp, Line 1043 Prepare recorder [HL-DT-ST DVDRAM GSA-T40N] for write in CUE-sheet-DAO DAO infos: ========== MCN: "" TOCType: 0x00; Session Closed, disc not fixated Tracks 3 to 3: 1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 0 1393885184, ISRC "" DAO layout: =========== __Start_|____Track_|_Idx_|_CtrlAdr_|_RecDep__________ 1123424 | lead-in | 0 | 0x41 | 0x00 1123424 | 3 | 0 | 0x41 | 0x00 1123424 | 3 | 1 | 0x41 | 0x00 1804032 | lead-out | 1 | 0x41 | 0x00 12:17:17 PM #12 Phase 24 File dlgbrnst.cpp, Line 1832 Caching of files started 12:17:18 PM #13 Text 0 File Burncd.cpp, Line 4040 Cache writing successful. 12:17:18 PM #14 Phase 25 File dlgbrnst.cpp, Line 1832 Caching of files completed 12:17:18 PM #15 Phase 36 File dlgbrnst.cpp, Line 1832 Burn process started at 8x (11,080 KB/s) 12:17:18 PM #16 Text 0 File ThreadedTransferInterface.cpp, Line 2609 Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #1123424 12:17:18 PM #17 Text 0 File DVDR.cpp, Line 2194 Recording mode: Sequential Recording Mode for Multisession 12:17:18 PM #18 Text 0 File Mmc.cpp, Line 21235 Set BUFE: Buffer underrun protection -> ON 12:17:18 PM #19 Text 0 File DVDR.cpp, Line 2340 Start write address at LBA 1123424 DVD high compatibility mode: Yes 12:17:18 PM #20 Text 0 File Cdrdrv.cpp, Line 8430 —- DVD Structure: Physical Format Information (00h) —- Layer: 0, Address: 0 (0 h), AGID: 0; Length: 2050 Book Type: DVD-R (2), Part Version: 5 Disc Size: 120 mm, Maximum Rate: