Picroft & Google Voice Kit - compile error & boot loop

I have an RPi 3B+ with the google AIY voice kit, running the latest stable picroft image (9-26-2019).

Guided setup gets as far as the “HARDWARE SETUP” stage - where after selecting “4) Google AIY Voice HAT and microphone board” - I’m greeted with an error:

"jq : error: setup_stage/0 is not defined at <top-level>, line 1: . + {setup_stage: $setup_stage}".

The system then reboots. Repeating the guided setup in this fashion results in an endless loop.

Does anyone have a suggested workaround?

A new picroft unstable image was put out last night that may have a fix for this.