Sounds like a graphics card issue. Maybe try updating your computer's graphic card. Look here for a tutorial how to do so: (click me) (http://feral-heart.com/index.php?option=com_jfusion&Itemid=2&lang=en&jfile=index.php&topic=514.0) This may also be an orge error. Look here for info on that: (click me) (http://feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=10423.msg144821#msg144821)
Before that sturf, maybe try changing your game's rendering system and go into C: >>> Feralheart >> media >particles and delete any ending in _0, _1, etc.
If none of that works, you may have to reinstall the game completely from this site. Not from the same install, download a completely new install here: (click me) (http://www.feral-heart.com/index.php?option=com_content&view=article&id=23&Itemid=40)