after updating from 0.5.2.2 to 0.5.3.2c, it seems like all slaves in a save from a different version are broken. the sleeping conditions for all old slaves is "0" and can't be selected, their abilities and traits are blank, their occupation is missing, their inspect and customization tab are all default, their sexual action tab is reset and actions cannot be performed, and end of day report is blank and doesn't appear, even when set to always.
this happens when selecting a broken slave.