I added a Multiplus 48/3000/35-50 to my ESS system. I used VE.Bus System configurator to set up the parallel inverters, but the Multiplus is not appearing on the GX Device list. The slave's LED's are flickering as per definition, and on the master only the "Mains" LED stays on. I have updated both inverters to the latest firmware and added ESS on both. I also updated the Venus GX to the latest firmware. The ports are functional, because if I swap the paralleling and GX device port around, on the master, the system switches off and then back on. The port on the GX device was functioning to the one inverter up to now, so that should also not be a problem. The ESS is also not available on the GX device. Any Ideas?