About a week ago one of the MAC Pro servers we have at work stopped working outputting this message to the system log. It stays in some kind of infinite loop trying to access this file. As we haven't commanded the server to reboot i assume it was an update installed automatically by the system updater that led to this annoying position.
I have searched through many forums and i finally found the solution for this. There seems to be a permission problem which avoid the system from accessing some essential files.
Step1) Boot your machine and just after the boot sound hold Apple (command) key + S. This will boot your system on single-mode.
Step2) In the command line remount the system as read-write (by default it boots as read-only).
# mount –uv /
Step3) Change the permission for the root of fs.
# chmod 775 /
Step4) Exit and reboot
# exit (twice to boot MacOS)
Step5) You should now be able to log on your computer and use normally. Run the Disk Utility in Applications and do a disk check and after it completes make sure to also check for permission problems by clicking verify permissions or fix permissions.
Easy fix for a big problem. =)