If you installed Security Configuration Editor and wish to unistall it, don't. Uninstalling SCE will render SCM (Security Configuration Manager) inoperable. Instead:

RENAME %SystemRoot%\System32\Rshx32_5.dll Rshx32_5.sav
RENAME %SystemRoot%\System32\Rshx32.dll Rshx32_5.dll

You will find that the original permissions editor is restored.

You must reset all the folder and file permissions you changed with SCE. As you attempt to view an object that you had changed, a pop-up error will inform you that the permissions are not viewable, offering you the opportunity to reset them.