It was working fine yesterday. Just started it, and for all games it says "Cannot fetch game details."

Edit: Tried to submit a support ticket using the form, but hitting Send just brought me back to http://www.gog.com/en/support/contact without any kind of a confirmation. Maybe I'll try a different browser.

Edit 2: Just noticed this topic: http://www.gog.com/en/forum/general/cannot_fetch_game_data