Try the savihost solution that won't stuff anything up.

1. Download savihost
http://www.hermannseib.com/programs/savihostx64.zip
http://www.hermannseib.com/programs/savihostx86.zip

2. Download VSTSynthFont
http://www.synthfont.com/VSTSynthFont64Setup.exe
http://www.synthfont.com/VSTSynthFontSetup.exe

3. Download a GM sountfont sf2 http://www.synthfont.com/soundfonts.html
also search google
Timbres Of Heaven GM_GS_XG_SFX V 2.0.sf2
Compifont_13082016.sf2
Musyng.sf2

4. Place savihost.exe in your plugins folder

5. Rename savihost.exe VSTSynthFont64.exe or VSTSynthFont.exe

6. Run VSTSynthFont64.exe and load the sf2 soundfont into SynthFont and turn the chord channel down or mute it.

7. Click up on Devices > MIDI > Set Input to same as Biab Output LoopMidi

8. Set Pass Thru to Output to your chord device.

9. Biab > Options > Prefs Chord Output >
Output chords enable
Chord Types
Channel
Ticks before 0 or early ?
Write track to midi file.

While still in Prefs > Channels check your chord output channel is not used.
Midi Driver > set Biab Midi Output to LoopMidi (don't use a VSTi or DXi Synth).

You can create a shortcut for VSTSynthFont64.exe and place it in the start menu > Startup, or place it on your desktop, or create a bat file to start Biab and VSTSynthFont64.exe at the same time http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=437598#Post437598