If you are seeing “mgmedia2 component not installed. Please install first to use the plugin.” then you probably either

  1. just tried to uninstall the mgmedia2 thing from your Joomla admin panel, or
  2. are trying to install mgmedia2.

If you want to uninstal mgmedia2, make sure you go to Installers > Mambots and uninstall the mambot/plugin as well.

If you want to install mgmedia2, you missed a step and you still need to installed the component in Installers > Components. See readme.

I just wanted to put this out there in case anyone is struggling with it.