HELP! W2k .bin burning problem!

[bitc0llect0r]

I'm running Windows 2000 pro with the Adaptec ASPI software and a TDK VeloCD burner. Burning files works fine in Nero, but when I try to burn a .bin image in either Nero or CDRwin, the CD is inaccessible. All the data gets written, and there are no errors during burn... but when I try to access the CD afterwards, it says 'incorrect function'. Ideas?