The CD cannot be removed from the CD-Recorder at this time. The CD-Recorder may have been left with the tray or caddy locked.
Wait until the CD creation is completed before ejecting the CD.
If the tray or caddy is stuck in the CD-Recorder, power the CD-Recorder off and then on to try to eject the CD.
See the documentation provided with your CD-Recorder or contact the manufacturer of the CD-Recorder for manual ejection procedures or for servicing information.