I'm enough of a mod user that I delay updating for a few days until I'm sure all my essential mods work with the update. The same goes with EPs, GPs, and SPs; I wait on purchasing them until I'm sure I won't have any nasty mod-related surprises.
In fact, I wouldn't even bother with the game if not for mods. Being able to change how it behaves, to have my gameplay preferences overrule the dev ones, is a large part of the reason I like the Sims series.