These types of failures are out of the software's hands.

Write Errors are totally down to the hardware / media and it would appear that with your setup, they're a bit hit and miss.

You're already using Verbatim 2.4x discs, so unless you've just got a duff batch, your drive must be the issue. Perhaps a lens cleaner would help - or invest in a different drive - I've never been a fan of the 'fake' Plextors.