Compressor Custom Settings not showing in FCPX

I've created a new setting in Compressor for a specific file type but, although it's showing in Compressor custom list, it's not showing when I try to add it to destinations in FCPX. I've restarted everything, renamed it, changed the settings etc, but FCP just can't find it. Can anyone help?

Here it is in Custom settings in Compressor at the bottom "New settings for RGS"

Not showing in FCP Destinations - Compressor bundle