(Unknown error -1)

When ever I go to callofwar.com I get a dialogue box with the words: "unknown error -1".

I press OK then go to "my games", same error, press OK, try open a game and it goes to login page and the same happens all over again. I never get to the game.

I've tried 3 different browsers.

Will try delete all caches and restart, but I don't think it is cache issue.