Hey there,
I had the same issue. The list I did to improve and fix the error:
1) check all mods and remove old stuff
2) load a new save game
3) load an old game save without cc
4) load a new game without cc
5) loaded step 4+5 with the checked cc
6) loaded older game with the current unchecked cc
Now im a bit done with all of that. The error occurred yesterday evening approximately 1 hour after purchasing and downloading the expansion "get together". I heard of that lin-z bug today, but I checked every lot, my Sims were traveling to. And there was no lin-z system in any lot or household and there is no sim in a realation with it. On the actual lot/household is everything fine. The error just occures when they want to travel. This happens with any Sim, wich wants to travel. Eve with a new created one.
I hope you guys may can help me thanks in advance for your advices and tips!
And have a merry Christmas! 🎅