Please try the following steps to fix this - you don't have to do all of them, just start at the beginning and check back in the game after each step to see if it works:
Update to the latest version of Flash at this site: http://get.adobe.com/flashplayer/
Clear your cache by following these instructions, which will work for most popular browsers:
1: Open your browser, and while holding the CTRL and Shift keys on your keyboard, press the Delete key. This will make a new window appear.
2: In this window, put a check in only the box that says Cache (some browsers say "Temporary Internet Files" instead of Cache).
3: Click the Delete or Clear button at the bottom of this window.
Update your browser, or try a new browser:
Mozilla Firefox: http://www.mozilla.com
Google Chrome: http://www.google.com/chrome
Microsoft Internet Explorer: http://www.microsoft.com/ie
Are you running any ad-blocking software? We've noticed that this can interfere with our game and cause errors like this. Please try disabling ad-blocker and any other unnecessary browser add-ons.
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