version mismatch

Warning! it is not specified on the sales page of this extension of the game Sims 3 that it is compatible with the sims 3 game French. So if you bought the sims 3 game by internet and you have a US version here does not work !!!
In the end, searching the net, we still found an IT solution (and yes, the extension was paid and the package the open ... had to find a solution) but it is not simple and not necessarily accessible to all. Better to be prevented.