One of the consequences of denying local code the right to run is that you
can no longer use the policy modification tools. One can usually work
around the problem relatively simply by editing the policy configuration
files directly. See
if you need help locating the configuration file(s) corresponding to the
policy level(s) you have edited.
If there's some specific goal you were trying for when you made this
particular edit and you would like help with it, could you please provide
more details regarding your desired outcome?