During install, anaconda printed CANT GET HERE! on the console. I wasn't watching to see when it happened, but the install completed successfully.
We (Red Hat) should really try to resolve this before next release.
This message is in anaconda at: libfdisk/gnomefsedit.c:566 I could remove this comment if I had CVS access. It occurs when you edit a new partition and change the type _from_ neither a Linux swap or Linux raid partition to another type that is again _neither_ Linux swap or Linux raid. e.g. change type from DOS to Linux native or vice-versa. Harmless error.
Fixed.