I also prefer using the vso patin couffin driver and therefore look forward to the next release to fix this minor irritation of the unable to lock error. I tend to find that if I use SPTI then I tend to get 'poorer' burns and more errors on playback which I feel is strange in itself, I had assumed that SPTI / Patin Couffin should have produced similar burns but it appears that that is not always the case and hence my preference of Patin Couffin over the other I/O options.
I can't really finish posting my first post without thanking you for all your hardwork over the years on Decrypter and Imgburn - it is very much appreciated by all.
Many Thanks,
Shootist