Krenrai

Hi, I dont know if this is the right place for this, but my MFSU'S dont work anymore. Before the update i had a decent nuclear system, and after the update the MFSU wouldn't store the electricity generated. I tried making different ways of creating it but it doesn't work. I also just made a generator which powers an electric furnace, but once i put the mfsu on it stops generating. What should i do to fix this?