Well, you could always re-install FH, saving what you have that's not the default in another folder. But sometimes re-installing helps.
But this might help, if you just reset the textures with anything that may be here:
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)
Once reset, maybe you could change them once again, if that was what you were planning.
Hope this helped!