Kernel26-2.6.34.2-1 Upgrade Fails

This kernel upgrade has commonly failed with the following message:

error: failed to commit transaction (conflicting files)
kernel26: /lib/modules/2.6.34-ARCH/modules.devname exists in filesystem
kernel26: /lib/modules/2.6.34-ARCH/modules.softdep exists in filesystem

The fix is simple:
pacman -Sf kernel26 kernel26-headers
pacman -Su