[help with finalising disk]

Hey guys, I keep getting this same message at the end of the burn. ive already been through 4 blank dvd's because of this and i have no idea what it could be.

 

 

 

 

I 22:35:01 Source File Implementation Identifier: ImgBurn

I 22:35:01 Source File File System(s): ISO9660, UDF (1.02)

I 22:35:01 Destination Device: [1:0:0] TSSTcorp CD/DVDW TS-L532R HA04 (D:) (ATA)

I 22:35:01 Destination Media Type: DVD+R (Disc ID: CMC MAG-M01-00) (Speeds: 2.4x, 4x, 8x)

I 22:35:01 Destination Media Sectors: 2,295,104

I 22:35:01 Write Mode: DVD

I 22:35:01 Write Type: DAO

I 22:35:01 Write Speed: 2x

I 22:35:01 Link Size: Auto

I 22:35:01 Test Mode: No

I 22:35:01 BURN-Proof: Enabled

I 22:35:01 Filling Buffer... (40 MB)

I 22:35:10 Writing LeadIn...

I 22:35:18 Writing Image... (LBA: 0 - 2285967)

W 22:51:38 Waiting for buffers to recover...

W 22:51:57 Waiting for hard disk activity to reach threshold level...

I 22:52:24 Writing Image...

W 22:57:15 Waiting for buffers to recover...

W 22:57:29 Waiting for hard disk activity to reach threshold level...

I 22:57:35 Writing Image...

I 22:59:15 Synchronising Cache...

I 22:59:23 Closing Track...

I 22:59:24 Finalising Disc...

W 23:00:01 Potential 'WaitImmediateIO' Deferred Error - (0/2) - Write Error

E 23:01:47 Finalise Disc Failed! - Reason: Cannot Write Medium - Incompatible Format

I 23:01:47 Finalising Disc (Last Attempt!)...

E 23:01:47 Finalise Disc Failed! - Reason: Cannot Write Medium - Incompatible Format

E 23:01:47 Failed to Write Image!

E 23:01:51 Operation Failed! - Duration: 00:26:46

I 23:01:51 Average Write Rate: 3,181 KB/s (2.3x) - Maximum Write Rate: 3,621 KB/s (2.6x)