EDIT: On a serious note
Can you do this pls, rename the one with the yumi1_fx to just yumi and see if that works, thx. . . SO
Changed reference in the XML from yumi1_fx.nif to yumi.nif in both places it occurs (xml/art and also in ls612's modular art). That did seem to fix the problems. Do you want me to commit that change? Why did we change to the yumi1 variant previously though? I assume there was some good reason...