Your second row 64 has 7 modules. But the 64 only has 6 power headers.
You'll need to lose a module or buy a Multi Power Cable accessory.
There's a 16/10pin and a 16pin version:
https://4mscompany.com/modaccessories.php

It looks like you plug the 16pin into a power header and then plug the 10pin (or 16pin) connectors directly to your other modules. That'll make more sense when you have your modules.

Don't forget to upgrade Plaits' firmware so you get the Orange mode!

And post your tunes! : )
-- Toccata

Thanks for info, I already have a couple of Multis on the way, as I foresaw this issue, and I like having an extra on hand for items such as this. :)

I just learned about the Plaits firmware update late last night. Sounds cool. Thank you for the reminder, though. This is accomplished through the 40 second wave file procedure, correct?

Re: Posting Tunes...I have a steep curve of experimentation, but I will definitely share when I have something worth sharing. :)

Thank you!

“You must have chaos within you to give birth to a dancing star.”
― Friedrich Nietzsche