1. NinjaTrader 8.0.27.0 or laetr version requires MZpack 3.18.8 or later version.
  2. Check what version of NinjaTrader you are running - 32 or 64 bit.
    For 64-bit NinjaTrader 8 install MZpack 64-bit version (recommended).
    For 32-bit NinjaTrader 8 install MZpack 32-bit version.
    We don't recommend using MZpack 32-bit version with 64-bit NinjaTrader 8 on 64-bit Windows.