...Aaah. That does make sense, thank you

This may not be a bug, as such, I haven't cleared caches or anything - about to try it now & will report on progress - but I just had this FSE pop up and am merely wondering what would cause it http://i47.tinypic.com/4n5mt.png

EDIT - Okay, cleared caches and restarted..and now I have an unplayable save file. Help?
(I've a backup I can use in the meantime, but I'm guessing I can't really restore this one...) (scratch that, that's me thinking dotted outlines automatically equal unplayable)

EDIT (2) - I was able to play with my family for a while, probably about 18 sim hours, and the same error happened. This is after clearing my caches, etc etc. I am unable to test it with a completely vanilla game + AM, because I cannot rename the folder to make a backup of it, Windows keeps saying that it is in use by another program, however TS3 isn't running, nor is the launcher - processes in task manager also do not bring up anything blatantly EA or TS3. :/

(so I accidently posted this in the sims 2 section first, oops /prepares to be sporked)

I'm playing a legacy, currently the second generation is young adults and there's no one for them to marry because every townie is an elder! I've aging and story progression on, running AwesomeMod (obviously) and NRass No-CD mod, and this isn't the first time it's happened...help?