Update your burner's firmware (remove any disc and close the tray before updating then reboot the computer after the updater is finished) and try again. You could also try burning at 4x instead of MAX (8x in your case).
Thanks for advice
Have updated firmwire, bought new Verbatim discs and lowered speed to 4x, but still no joy!
Could it be faulty drive???
I 14:28:03 ImgBurn Version 2.5.5.0 started!
I 14:28:03 Microsoft Windows Vista Ultimate Edition (6.0, Build 6002 : Service Pack 2)
I 14:28:03 Total Physical Memory: 3,667,068 KB - Available: 1,228,880 KB
I 14:28:06 Initialising SPTI...
I 14:28:06 Searching for SCSI / ATAPI devices...
I 14:28:07 -> Drive 1 - Info: HL-DT-ST DVD+-RW GSA-S10N A103 (H:) (ATA)
I 14:28:07 Found 1 DVD±RW!
I 14:28:57 Operation Started!
I 14:28:57 Building Image Tree...
W 14:28:58 Skipped Hidden File: C:\Users\kevintotts\Pictures\Occasions\Cait & Declan's Wedding\Collages\.picasa.ini
I 14:29:04 Checking Directory Depth...
I 14:29:04 Calculating Totals...
I 14:29:04 Preparing Image...
I 14:29:05 Checking Path Length...
I 14:29:05 Contents: 534 Files, 2 Folders
I 14:29:05 Content Type: Data
I 14:29:05 Data Type: MODE1/2048
I 14:29:05 File System(s): ISO9660, UDF (1.02)
I 14:29:05 Volume Label: Cait & Declan's Wedding
I 14:29:05 Size: 2,392,533,251 bytes
I 14:29:05 Sectors: 1,168,502
I 14:29:05 Image Size: 2,394,816,512 bytes
I 14:29:05 Image Sectors: 1,169,344
I 14:29:07 Operation Successfully Completed! - Duration: 00:00:09
I 14:29:07 Operation Started!
I 14:29:07 Source File: -==/\/[bUILD IMAGE]\/\==-
I 14:29:07 Source File Sectors: 1,169,344 (MODE1/2048)
I 14:29:07 Source File Size: 2,394,816,512 bytes
I 14:29:07 Source File Volume Identifier: Cait & Declan's Wedding
I 14:29:07 Source File Volume Set Identifier: 3ECB739C0011D7B6
I 14:29:07 Source File Application Identifier: IMGBURN V2.5.5.0 - THE ULTIMATE IMAGE BURNER!
I 14:29:07 Source File Implementation Identifier: ImgBurn
I 14:29:07 Source File File System(s): ISO9660, UDF (1.02)
I 14:29:07 Destination Device: [1:0:0] HL-DT-ST DVD+-RW GSA-S10N A103 (H:) (ATA)
I 14:29:07 Destination Media Type: DVD-R (Disc ID: MCC 03RG20) (Speeds: 4x, 8x)
I 14:29:07 Destination Media Sectors: 2,298,496
I 14:29:07 Write Mode: DVD
I 14:29:07 Write Type: DAO
I 14:29:07 Write Speed: 4x
I 14:29:07 Link Size: Auto
I 14:29:07 Lock Volume: Yes
I 14:29:07 Test Mode: No
I 14:29:07 OPC: No
I 14:29:07 BURN-Proof: Enabled
I 14:29:07 Write Speed Successfully Set! - Effective: 5,540 KB/s (4x)
I 14:29:08 Filling Buffer... (40 MB)
I 14:29:09 Writing LeadIn...
W 14:29:39 Failed to Write Sectors 0 - 31 - Reason: Write Error
W 14:29:39 Retrying (1 of 20)...