World Adventures installation HELP ASAP Files dont match up!

So I'm following all the steps I took to install all my other sims packs and they all work fine. But with this one I dont know whats going on >.<
I unrar the file thats highlighted here (using RarZilla); -(it says I cant post external links yet, I dont know how else to explain it without pics xD;)-
but it freezes after 1% so I just cancel, it still gives me the ISO/disc image to mount though, so I mount it. I auto run and start the installation an everything is fine, until this message comes up; -external link to photo here-
I click ignore, but then about 50 more of these types of messages comes up everytime I click ignore, each one with a different file saying that it doesnt match up!

Pease help! ;_;

I'm also having a problem with the Sims 3: World Adventures installing. I have Generations and the base game installed from discs, and other downloads are working fine. However, Every time I try to install S3WA, it tells me instantly that the regional code isn't right, or doesn't match the one for my Sims 3 game. Any advice?