This error occurs because the user has entered incorrect administrator password while uninstalling the CA Parental Controls.
The solution to the problem
Follow the instructions to fix "Error 9054" while uninstalling CA Parental Controls:
Step 1- Reset your password if you, being a valid administrator, have forgotten your password.
Step 2- Apply new password to uninstall the CA Parental Controls.
You can disable CA Parental Controls by using Windows Task Manager and the Microsoft System Configuration Utility (msconfig).