Slitherine

I had to reinstall all the games on a new windows 7 computer, but the game does see only the basic scenarios and it does not "see" the add-on ones.
For example, I can play Clastium but not Tewkesbury. I checked the directory battles and they are all there... This happens both in the single game and in the multiplayer one.

What does it say on the main menu at the bottom left about the army packs?

It says version 1,40 and all expansion are installed...

What exactly does it say - pre-loaded or something else?

Well it says: "ready", followed by the expansions...