zoom mid side decoder doesn't show up in AU plugins

I haven't got my Zoom H2n yet but I downloaded the mid side decoder to have a look at it and it doesn't show up in the plugins list. You can download both AU and VST so I downloaded AU and it's saved in Library/Audio/Plugins/Components. This wouldn't show up in Logic so i downloaded VST which is saved in Library/Audio/Plugins/VST and that doesn't show up either. Has this happened to anyone else? How did you overcome it?