Hi poppo,
Load manager errors are usually the result of outdated or corrupted files in your pc's cache which is not unusual. Files for the game are stored in your computer's cache which allows those files to be accessed quickly instead of having to be downloaded each time they are needed. We update game files often so any time you run into load manager errors or when we release a product update it's a good idea to clear your caches.
Follow this link (<--- double click) to learn how to clear your Flash cache and Browser cache. Once you've done that be sure to reset any in-game preferences you use such as flagstick animations or graphics quality. You can do that in the Game Options area under the My Settings tab in the game window.