Creating a custom visualisation plugin based on the slideshow one

[Pangolin]

Hi,

I've customized the slideshow visualisation plugin a bit (added the ability to randomize the images, link to a details page, and show a default image if no images exist for it to use) and I was hoping to make it into it's own plugin so my changes don't get overwritten when upgrading, but copying and renaming the folder the same way you can for a view doesn't work, as I can't select this new "plugin" from the dropdown in the fabrik visualisations. Am I missing a step?

Thanks,

Rob