M4 is a main figure that you would have to have in your runtime to use any character pack that uses M4. You would also probably want the Morph ++ package from DAZ as well. Hiro is a new set of morphs for M4 so if your character needs these morphs, you have to have Hiro in  your runtime for it to load properly. The reason you keep getting the same error over and ove ris that Poser is trying to find all the morph targets and data for each limb/apendage for your figure.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740