How does this work for you?
http://www.mediafire.com/?dzpjajnvi7pnnnhAfter you download, make sure you move/extract everything to the "My_Objects" folder in FeralHeart, Open the game, go into Object Maker,(blah blah blah), On the Mesh tab, write Lavafall.mesh for mesh and then Lavafall.material for material. Click "Add New". If the mesh turns out too dark, then simply put a 2 at the end of "LavaFallMat" POOF! It's not dark anymore!
Also, let me know if you dont want the Lavafall transparent.