Don't worry, I've searched extensively before posting!
Logged in as admin. SIP disabled, Xcode installed, terminal commands ran. But perhaps I'm overlooking something obvious to you.
Getting the following error when trying to install v3.2.2 - have tried on the following three separate systems:
- Opencore Hackintosh: Monterey 12.4 i5
- Macbook Pro M1 silicon: Monterey 12.6
- Old Clover Hackintosh running Mojave 10.14.4 i5

32gb target USB drive has been formatted to Mac OS Extended (Journaled) with GUID partition map.
Snippet from one of the machine's install logs attached.
install.log