I get this index error when hitting convert.

[IndieBrosCEO]

Index was out of range. Must be non-negative and less than the size of the collection Parameter name: index

[IndieBrosCEO]

This error still outputs Guitar and Bass but not Drums

[Dirtmigurt]

When creating a drum track you need to make sure that all other instrument tracks have been removed. For some reason the drum tracks will be labeled as "AcousticGrandPiano".

You can listen/preview the track from the Top box for Lead Guitar.

If this doesn't help can you please provide a link to the MIDI file that is causing the error so I can investigate.

[sparqueur]

Hi,
This is a not working midi file example.
You will get the index error with the drum track.
Thanks for your very nice tool !
alt-j Breezeblocks.zip

[Dirtmigurt]

That .mid file generates drums properly on the most recent release (0.4.2) https://github.com/Dirtmigurt/ConvertHero/releases/tag/0.4.2

Is that the version you are using?