DVD Decryptor burn irregularities?

[djcc]

I've burned about 2 dozen DVD+R's. All are from the same cakebox of Fujifilm Ty02. About a half dozen were with DVD Decryptor, the rest with the Sonic software that came with my Benq 1620. All were made by burning ISO's created with DVD Shrink. Both DVD-D and Sonic are set to "max" for burn speed, rather than a specified rate (ie, 4x, 8x, etc). I have no idea what speed Sonic is actually writing at as it does not provide any log or statics. Averages for DVD Decryptor are around 8X.

Of those created with DVD Decryptor, half will produce the error "No additional sense information" when scanned with Nero CD-DVD Speed. Although I have burned nearly 3 times more with Sonic's software, not a single one has produced this error. All the discs that produce this error when scanned play without problems in my set-top Sony DVD player.

Question #1 - what exactly is the error "no additional sense information"?

Question #2 - is this mere coincidence that the discs burned with DVDDecryptor produce this error, or could there be something to it?

[djcc]

Seems no one knows the answer to this, regardless of where I ask.