miniGRID won't load in FL StudioUpdated 6 days ago
Load miniGRID in a Mixer insert. The Master insert is the safest place. Do not load it in the Channel Rack. That slot is what produces the "problem opening miniGRID" error.
In the plugin wrapper, set the MIDI output port to a number. Set your synth's MIDI input port to the same number. In the Processing tab, turn Allow smart disable off.
FL Studio's own generators cannot receive MIDI this way. Use a third-party instrument.
If the error is still there, reinstall miniGRID, restart the computer, and rescan.