with my luck you're going to tell me. "they fixed senarios at 2.03 sorry"
I don't remember what v2.03 fixed (and I can't seem to find a proper changelog at the moment, only the release-notice), but scenarios were already working long before it got released. The campaigns are nothing but scenarios connected via an overall thread. I've been successfully playing the TotA campaign since release, and the previous ones (again) after they became available to play under TotA.
Anyhow, you will need to update. If you registered your serial key with Stardock, you should be able to download a fully updated installer directly from them. It's only 1.88GB big, so it shouldn't take 32 hours, even with a 4G connection. Just go to their Store page, log into your Stardock-account, and go to the My Downloads page.
Notice that I said "should". Stardock went Steam-only with all of their games about a year ago (except for GalCiv 1, which is also available on GOG.com). If you buy a game directly from them now, you will only get a Steam-key. I don't know, if this affects retail-keys in any way.
that's why I use luck in the game to make up for it in life.
That sounds... awfully familiar.