JS Error while loading

Hello,
when i load the game, i get this error and can't move my units or zoom..
Error: TypeError: this.$f is null, Script: http://fr.atwar-game.com/java/game/atwar.game.min_v34.js, Line: 1066, Column: 257, StackTrace: TypeError: this.$f is null

The same happens to me.

It usually happens more often in firefox than anything.

you just have to restart game in another browser