Base Game Too New for Expansion Pack?

[liliboxer]

I am trying to install an expansion pack but am getting a notification that my base game is too new for the expansion pack (Late Night). I haven't had this problem with any of my other expansion packs. Please advise.

[rumbutter]

Is it base game incompatible message?

see these

http://sims3.crinrict.com/en/2011/01/error-base-game-incompatible-with-current-expansion-pack.html

http://answers.ea.com/t5/The-Sims-3/Sims-3-Base-Game-incompatable/m-p/4475186#M190759