Also, elders sleep thru the night and the regular sleep thru night by Inge clashed for me. You can only use one of those as far as I have found..
That was as designed. The SleepLater hack I made incorporated the ElderSleep though. The one for elders only I made as a subset of the regular sleep through for those who only wanted that effect and didn't want their other sims waking up later. My sleeplater patch had them wake any time between 7am and 10am depending on how lazy their personality was. Dunno if it's still compatible with later EPs though.