NickelMenu is the program you installed by installing one of NiLuJe's OCP installers. And since you mentioned NickelMenu in your message to which I responded, I assumed that you knew what it was.
You may want to take a look at the
NickelMenu: An integrated launcher for Kobo eReaders and the
Best of NickelMenu? threads.
And I would still suggest that you uninstall KFMon since it is unnecessary for the purposes of launching KOReader and/or Plato.