I have built a new front end GUI for both growisofs and Apple's DiscRecording.Framework. It looks real cool and also checks the media before burning. I have fixed the memory management bug in the iso verification code. Garbage Collection is now disabled to allow for builds for Mac OS 10.4 and below. After some much needed testing, there may be some hope to allow for this program to work with any mac running OS X 10.0 with a Dual Layer DVD drive.
I really need some sleep, so I will finish testing tomorrow and upload a new build. I will have a full change log posted with the release.