"Book Type setting not supported"?

Hi i am recently having problems with Nero (dl 6.0.012 at moment to see if that helps). When trying to copy DVD films using DVDShrink or Nero I keep getting this error…

Book Type request [LO]: DVD-ROM
Book Type setting not supported for the loaded disc type

10:12:25 #26 Text 0 File Cdrdrv.cpp, Line 1287
10:12:25.593 - SONY DVD RW DW-D22A\H1 T0 : Queue again later

10:18:18 #27 TRANSFER -25 File Reader.cpp, Line 382
Error reading data

10:18:18 #28 Text 0 File Reader.cpp, Line 385
Exception value: -1

10:18:18 #29 Text 0 File ThreadedTransfer.cpp, Line 228
all writers idle, stopping conversion

10:18:18 #30 Text 0 File DVDR.cpp, Line 2603
EndDAO: Last written address was 1238911

10:18:32 #31 Text 0 File DVDR.cpp, Line 5317
Book Type request [LO]: DVD+R
Book Type setting not supported for the loaded disc type

10:18:32 #32 Phase 38 File APIProgress.cpp, Line 276
Burn process failed at 8x (11,080 KB/s)

When looking at the burnt disk it only looks half done and when trying to play crashes at last few scenes of film. I never used to have this problem and im still using the same firmware and DVD media (Verbatim 8X).

Does anyone have any ideas as my collection of coasters is building.

Thanks to anyone who replies.

Sorry Nero version im using is now.

@ si_harp
I am going to assume you have the latest firmware for your sony.
Since your sony is a liteon rebadge, you can check your burn results with Kprobe 2.4.2 BLER scans(scanned at 4x scan speed the forum standard for comparison). You can read Interpreting PI/PO error scans to find out what these graphs mean. PI/PO is now referred to as PI/PIF. Roughly, PImax<280; PIFmax<4. Attaching disc quality scans to your post of the offending discs in the liteon forum will help us help you.

Problem fixed, appears there where “BAD SECTORS” in one of the .vob files, a restart and checkdisk fixed the files and then burnt fine, thanks for help tho.