When you try to configure the Linuzappz ISO plugin, it just takes you to a window that lets you compress or decompress your CD/DVD images.
So long as the Linuzappz or Gigahertz CDVD plugin is selected in the config, File > 'Run CD/DVD' will work fine.
So long as the Linuzappz or Gigahertz CDVD plugin is selected in the config, File > 'Run CD/DVD' will work fine.