hi
when it says there is a problem, then it's something. usually it means an issue in internet connection, between you and the game. it could be somewhere deeper from your ISP or wifi glitch if you are using it or something else.
You should be able to hit f5 and reload the game.
I would also clear cookies/temp files for both flash and browser to make sure it's not some corruption that's messing it up.
-wgticon