hi,
i'm from germany and my english is not best at all. i'm sorry.

since bmw has released the 2008/2-dvd, it's a dual-layer dvd. it only works with v31 or above. but you've already updated to v32.
so try out this:
burn a dvd-dl, minus not plus, with The Official ImgBurn Website
as slow as possible on one of the following verbatim discs:
DVD-R Dual Layer 4x | Double/Dual Layer - DVD | Verbatim Europe - Data Storage, Computer & Imaging Consumables
DVD-R Dual Layer 8x | Double/Dual Layer - DVD | Verbatim Europe - Data Storage, Computer & Imaging Consumables

it works fine without deleting files and without failures while reading.

i hope my grammer wasn't worst.

best regards.
chris