According to Ahead, your LG GCC-4320B (not CGC) is supported by Nero 220.127.116.11i and later; it is also listed in the database for the latest InCD 3.52.20b.
Did you install Nero from a CD that came with your drive? If yes, which version?
As burninfool suggested, you should download Nero 18.104.22.168a from www.ahead.de
(and InCD 3.52.20b as well if you need it). If your current version of Nero is not too old, you needn't remove it before installing the latest version; otherwise, use Control Panel | Add or Remove Programs to uninstall the old one first.
If you still have problems after the upgrade, more information will be needed about your hardware (IDE connection, etc) and software (other burning programs installed, ASPI layers, etc). Recent versions of Nero make Nero InfoTool available in Start | Programs | Ahead Nero | Nero Toolkit.