I got the Error 3 on my ALP but when I rebooted, everything was fine. Interestingly, I got the Error 3 right after upgrading the firmware (both CPU and HiFi Control Set Voicepack) and NOT powering down for over 60 minutes after upgrading...then I rebooted once and the system stayed stuck in some sort of boot state (solid green light and no output from the speaker). Rebooted again, keeping the system powered down for 30+ seconds and everything has been fine since.