Okay, I finally found the link on cdspeed2000. Don't know why I couldn't find it before. Either it wasn't there or my mind was in a fog. But it really wasn't too hard to find today.
First, the general notes for the new release state:
www.cdspeed2000.com wrote:Added Advanced DAE Error test with support for special test discs and CD Speed DAE test disc
Based on this, I thought the disc that CDSpeed creates could be used for both sets of tests. I tried it, and it worked for the DAE Test, as it always has, and for the Error Test. Or at least I thought it worked for the Error Test. That is why I suggested using the disc for both tests.
The reality, however, appears to be that although the Error Test ran using the DAE test disc that CDSpeed creates, I don't think it actually tested anything. As you suspected, a special test disc is required for the Error Test:
http://www.cdspeed2000.com/go.php3?link ... rtest.php3
It is called the A-BEX TCD-721 special test disc, and it checks to see how the drive handles intentionally induced errors of increasing magnitude. I haven't investigated where it can be obtained and how much it might cost. Like you, I suspect it isn't cheap. But hopefully I am wrong.