Thanks folks for the replies,much appreciated.The basic problem,is that most RebelMommy figures will only load part of the figure's morphs.IE:Head but no body or vice versa.The main morphs are the elf ear morphs.When clicking on the inj file(in Pose menu)it says loading but has no effect.
Agreed with the comments though about Daz updater utility.It seems like a backward step rather than forwards.No wonder so many people ask "where does this file go",when installing content.