I have placed an extension for the Morningstar Engineering MC8 and MC6 Pro on GitHub at Morningstar MC8/MC6 Pro GIgPerformer Extension.
This was originally built for the MC8, but with the recent release of the MC6 Pro (featuring some nice color displays) I have updated it to work with the MC6 and MC6 Pro as well. (Hereafter referred to as MCx.)
Reasonably detailed documentation is provided in the GitHub repository in PDF/PowerPoint form.
I love GigPerformer, love my Morningstar MC8 and MC6 Pro, but I am never keen on having to keep Rackspace/Setlist changes coordinated across multiple apps or devices to keep a controller working in sync with a Gigfile.
This extension is designed to take control of the MCx displays and always keep them synced up to what you’ve designed into your Rackspaces/Variations/Songs/Songparts. It requires installing the appropriate MCx template into one bank on your controller, and activating that bank before starting up GigPerformer with the extension.
While this MCx extension will not write to any of your banks, I recommend backing up all other banks from your MCx before utilizing this extension.
A demo Gigfile (guitar based, using TH-U) is included in the downloads.