Rivergate Software Inc. - makers of DVDAfterEdit

If you are currently using an Adaptec SCSI card, even if it has performed flawlessly for you over the years, you should replace it with an ATTO PCI UL3S or UL4S. That is because:

1. Adaptec no longer supports Apple Macintosh. The last set of drivers that have any chance of working were written in early 2002. Since that time, Apple has written and rewritten their SCSI support many times, fixing one error only to cause additional errors to appear.
2. Just because an Adaptec card "works" in DVD Studio Pro or Retrospect does not mean that it will work in DVDAfterEdit. We use more different command sequences and error checking and recovery than other applications do. Adaptec drivers do not support these functions correctly, and will sometimes return as if everything was OK when in fact the operation failed. If you follow the public forums, DVD Studio Pro has had many problems with replication over the years. Some of these problems are probably caused by undetected tape errors.
3. We do not have any drivers in DVDAfterEdit. Our code uses the installed SCSI drivers, which in turn interact with the OS X operating system. We cannot cause a "gray screen of death" directly, because our application runs at the user level, and does not have access to the low-level system resources. If we attempted to modify our code to use only the Adaptec driver functions that work correctly, we could not detect all tape errors.