Michael Axel , May 11, 2006; 11:56 a.m.
It's a data error. I find that CDs often "degrade" and give errors like this... but not usually after so short of period. Another cause can be an incompatible CD ROM drive. If this is happening on the drive that the CD was created on, that's not a good sign. Otherwise, try another computer and see what happens. It is also a good idea to close the session of the CD rather than leaving it open for additional data.