VST plugin showing twice

I upgraded the Korg MS20 plugin to the latest version and now it shows twice in the VST instrument list, however in the plugin folder there is only one file for the plugin in the VST folder.

Is there a way to fix this?

I am running on a Mac OSX 10.6.8, Renoise v2.8


If it shows twice after having done a rescan of all plugins you have another version somewhere representing the plugin. Are you perhaps having an AU copy somewhere?