Use Option 2. Much easier. In a nutshell go into regedit and go to the section mentioned in the link. For CC 2017 you have to open directory 11.0. From there find your plugins (Cosmo, or Colorista, for example) and change "Ignore" from 1 to 0. You can also turn off plugins you don't want to see by changing 0 to 1.
Here's the link. It's for Red Giant/Magic Bullet but it works for all plugins.