So after installing the latest version of Launchbox the first thing i done was import Mame 02.51, it started to scrap the metadata etc after it had finished i closed it down and upon reopening Launchbox i noticed that under the Platform Category tab its now blank and missing all of the category's whereas before it was populated by all of the various category's etc, whys it done this and how do i get this back in my setup ? THX