Convertxto dvd

hope somebody can help me? i have always used convertxtodvd, but just lately i am able to convert themm but when it comes to burning them it keeps coming up with the error, to which , i have attached.

Media removed. Burning layer not ready to write
21/01/2009 14:13:36 error Write error at 371776 (16) - Code 06 29 00 [Unit attention, Power On or Bus device reset occured]
21/01/2009 14:07:45 info Lead-in burning time (mS) 0
21/01/2009 14:07:31 info Write started 2014448 sectors to write
21/01/2009 14:07:31 info Init success: DVD-R SAO
21/01/2009 14:07:31 info Writing speed requested x8.0, effective x8.0
21/01/2009 14:07:31 info Available write speed: 8x, 6x, 4x, 2x
21/01/2009 14:07:31 info Media ID: CMC MAG. AE1
21/01/2009 14:07:31 info Media type: DVD-R
21/01/2009 14:07:31 info Ultra DMA mode 2 (ATA33)
21/01/2009 14:07:30 info Scanned files #11, folder #2 - total size 4124479488 b. (3.84 Gb.)
21/01/2009 14:07:30 info Inserted media type : DVD-R
21/01/2009 14:07:30 info Write started
21/01/2009 14:07:30 info Media name: “PRIDE AND GLORY (2008) DVDRIP DI”
21/01/2009 14:07:30 info Burned folder: "C:\Documents and

any help would be appreciated as it is getting very frustsrating!!!

Looks like a problem with the media.

thanks very much for your help, after all that, installing - re-installing, it could all come down to just being the discs. thanks once again!