>Pre-work: deleted pref files and the OS X cache for PM. Reinstalled >PowerMail 6.0.3 from a fresh download.
I've gone through a number of bad days in the recent past, struggling with mail problems and PM 6.0.3 quitting. Either I missed it or else you haven't mentioned any of your settings in the mail accounts. I had to drastically change my settings to get my Powermail working again. I eventually did, but it was a lot of work. Far from auto-configure. So long for now, TOM