Verification failure.

When verifying my game i get a verification failure. Impulse tells me to download some datafiles. It downloads a couple of kilobytes, then tells me it's done. I verify again, still the same thing happens.

The game itself runs, and I can create and play skirmish games.
However, when trying to join a friend of mine it says my data differs from the server. Even though both of us have the exact same version of entrenchment. =/ I think at least. I wasn't able to find a public game I could join to verify if the problem was with me or with my friend. In any case, both me and him got the same "infinite verification loop" in impulse.