CloneCD appears to burn the .iso, but doesn't really do anything



While burning a 4.3GB .ISO (Halo 2) file to a 4.7GB DVD-R disk, CloneCD goes from 0-100% in roughly 10-15mins, everything works, no error messages or anything.

However, when I look at the disk, it just has a tiny ring of data, nothing else. It appears as though it’s only burned a tiny, tiny portion of the .iso to the disk, even though it took so long to burn.

Any suggestions?