Very strange, but this is great because we're currently trying to track down the cause of this issue.
Would you be able to send me a private message with the answer to these questions:
1. Please provide us with the browser name and version you are using
2. The error message and number (if any) you are receiving
3. Does this happen with any other FB account you might have?
4. Does this issue occur with more than one browser? (if you have only tried one, we ask that you try using another browser just to see if you get the same error)
5. Do other Flash based games work for you as well?
6. Do you know which version of Flash are you using? (To check which version of Flash you have and to install the latest version, click this link: http://bit.ly/CheckFlash)