On saucy that's because you're using 0.600.4-2ubuntu2 and not 0.600.4-2ubuntu2.1, make sure you're running the version from proposed and try again.
On saucy that's because you're using 0.600.4-2ubuntu2 and not 0.600.4-2ubuntu2.1, make sure you're running the version from proposed and try again.