When I activated the plugin, the header (at the very top, above the normal header of the admin area) of the page displayed the following message:
WordPress database error: [Table 'wp_people' already exists]
CREATE TABLEwp_people(idint(11) NOT NULL auto_increment,first_namevarchar(30) default NULL,last_namevarchar(30) default NULL,slugvarchar(60) NOT NULL, PRIMARY KEY (id) ) ENGINE=MyISAMWordPress database error: [Table 'wp_bios' already exists]
CREATE TABLEwp_bios(idint(11) NOT NULL auto_increment,uidint(11) NOT NULL default '0',textlongtext NOT NULL,photoblob, PRIMARY KEY (id) ) ENGINE=MyISAM
I knew those tables didn't exist because I'd just made a backup of the database, so I deleted their entries and the plugin, clicked again on the plugins page and it was returned to normal (note: when this error occurred it cleared my plugins page of all plugins). I checked the database to varify that the tables didn't exist, re-uploaded the plugin and activated it... Same thing happened again.
There could be a simple explanation for this, or it could be a bug that needs fixed.