Interesting. Makes me wonder what some folks have installed in their download folders.
I've had multiple sims fulfill multiple LTW's since NightLife and they're all fine. I also have some pre-Nightlife sims who had their LTW's fulfilled prior to NL installation an they're fine as well.
They are supposed to re-roll new LTW and select something new based on their aspiration. If you'll refer to the memory, it'll read something like "I wonder what I'll do now?"
Seems like something has gone afoul in Denmark. Remove hacks, re-fufill LTW without them (it's not difficult for most after you've done it once) and see what happens.
I'll be the first to admit I use hacks (I prefer to call them mods because hacks just sounds too bloody). I've moved sims from house to house previously without this problem occurring and didn't put new hacks in my game in the meantime.
Since there's no lifetime want to fulfill it's going to be a bit tricky, isn't it? LOL
I don't have University, so this whole new LTW thing is new to me. I'm basing my assessment of what should happen on the way it worked between the time I installed NL and installed the patch.