Missing portraits

So, all the computer generated portraits disappeared... I've tried downloading different rosters and even doing the Steam reset thingy but to no avail.
Anyone has an idea?

http://i.imgur.com/6QixJCY.png

Thank you in advance

Verifying your game cache SHOULD have worked. Otherwise, do a clean install.

Verifying your game cache SHOULD have worked. Otherwise, do a clean install.

I've actually tried that... but oh well. Thanks anyway.