On my essentially-fresh LJ install (I played with the configuration file a bit, and created a user) any attempt to access the data view causes the error:
Invalid userprop no_mail_alias passed to
LJ::load_user_props. at /home/mart/cgi-bin/ljlib.plline 2908.
This is caused by the data view being configured to load this userprop. I can't find any mention of this userprop anywhere other than here, and it doesn't ever seem to have existed in base_data.sql. The ‘data’ view seems to have required it forever, and load_user_props has been dying on non-existant userprops for months now. What gives?