We are using external users and when visiting my account page, I have a link to my private messages. This should be disabled when using external users.
To fix this, I added the following line to my custom theme:
I've also modified pages/message.php and pages/messages.php so users don't get a crash dump if they get to those pages:
qa_fatal_error('User accounts are handled by external code');
return include QA_INCLUDE_DIR.'qa-page-not-found.php';
Not sure if there are other things to modify, but I'm just giving a head's up in case someone got into that problem.