I bet if you look through your log file (/var/log/messages) you will find this error on several files. I know cause I spent several hours (about 13 hours) fixing this same problem on one of my installs.
You know what the problem was? Bad DVD disc.... Reboot with the install disk and verify it. I bet you anything it will fail.
All I did was reburn the ISO and re-installed. Everything worked perfect. If you still get the error then you may need to redownload the ISO. If you still get the error after that re-install then your HD may be messed up.