A cyclic redundancy check is a simple mathematical method for detecting and possibly correcting data errors. It's not a message often waggled in the face of users these days since box covers don't have the space to explain what it means.
Sounds like you may need a replacement CD. Save a trip. Try it in another computer or CD drive just in case.
On the other hand, cycle redundancy check may mean you received two bicycles for Christmas. Have you checked for large boxes?
