I've tried both the automatic installer and by following the manual install instructions.
thanks for the fast reply
Edit: The message "No .rockbox found. Installation incomplete' has come up after reboot twice now as well, instead of the 'no partition found' message. When this message comes up, it launches into a stripped down (unthemed maybe?) interface. I haven't worked out how to consistently replicate the second error message.
2nd Edit: I found an older build (r24079) floating around the internet. Manually installed it, and it runs fine. Personally, I'm happy using the older build, but can supply more info about the issue I was having if anyone wants it.