FL's plugin search there's a Kontakt_2, and after some file searching i found an old version of Kontakt (6.1.1) sitting in a subfolder in my VST directory. Not entirely sure how I've missed that, but everything ...
FLStudio project (.flp / .zip) or FLStudio State File (.fst) created in FLStudio 12 into an earlier version of FLStudio. Projects from the latest version of FLStudio do not load in older versions as many things ...