It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I'm getting an error whenever I try to run the installers for either of the expansions--"This version of the base game is not supported. Please update your game version with the latest patch."

When I go in game, the main menu says the game version is 1.6a, which I believe is the latest version.

The installers were downloaded just 10 minutes ago, btw.
No posts in this topic were marked as the solution yet. If you can help, add your reply
Never mind.

I reinstalled the game from the installer, and then I could install the expansions.