It is possible that you added actions to your controllers and did not update the aco table. You can update acos from the command line using the cake shell.
To add aco for the view action for UsersController
cake acl create aco Users view
To add aco to a new controller (e.g. PostsController )
cake acl create aco controllers Posts
If you find it most useful to have a script to automatically update acos. You can either write your own or try something like this aco_sync shell
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