Yep, those textures are mixed up alright. Try downloading the "media folder" from this link and copy the files (from the download) from media > terrains > textures to the same destination in the Feral Heart folder, which is C: >>> Feralheart >> media >> terrains > textures. Click replace! Link: http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=44252.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=44252.0)
If that doesn't help at all, change your rendering system: http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=43234.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=43234.0)