jhd3rd,
I think you're right... it appears as if the Audrey cannot find any "users" so cron isn't working for anyone... I created an /etc/passwd file as you described, slayed cron, and reran, still getting the same error message. I transfered the passwd utility to my Audrey thinking maybe there's another file that cron checks to see if a user exists, and i typed "passwd root" at the shell prompt. it walked me through a setup as if it were creating a user named "root" with userid "100" ...
is there a utility for QNX where you can list any existing users, or find out who the "current" user is? if the "current" user is some internal name, perhaps making a crontab with that name would work?
i don't remember where is saw this, but there was a post somewhere that showed how to set a "DEBUG" environment variable to a certain value, then when you run utilities like "cron" it'll tell you extra information such as libaries loaded, etc ...
too bad there isn't a way to tell which files cron is trying to access, sort of like "FileMon" for NT...