DVD formatted but can't play

I started a project the other day and at the end got a 0x0, device error.

I was advised that this was a corrupt dvd drive, I've since changed the drive and the media I'm trying to record to, to TDK dvd rw 4x

I opened up my projec and pressed burn.

DVDSpro did its thing and formatted the disk and ejected,

but it doesn't seem finished, it just seems to have copied the HDS folder over to the disk, but the disk won't play, I've tried completing it with toast and it says that the dvd is read only, yet this is a data and video disk.

Where have I gone wrong, is it the machine? software? or me? Please help, going slowly insane.

many thanks

aka Newbie Wan Kenewbie. "I will get over my manualaphobia, one day at a time."

System
Mac Pro 2.8Gb quad core
8Gb RAM
1x 320Gb 7200 hardrive
1x 1Tb 7200 hardrive
Nvidia Geforce 8800 512mb Graphics card
1x 1Tb external WD 'My Book' eSata

Equipment
Panasonic AG-HVX 200
Firestore FS-100