Folks with older ATI Radeon video cards (e.g. the 9800) have noticed that certain projectiles in FFVTR no longer show up, probably due to a DirectX update.
I've whipped up a fix for the problem projectiles, which you can get in my Yahoo group:
http://games.groups.yahoo.com/group/humantonsmaps/
Here's the list of projectiles this fixes:
-Thug Grenade
-Acid Bomb
-Smoke Grenade/Darkness Bomb
-Dark Shaman Cloud of Pain
-Spear Toss
-Burning Shuriken
-Off the Cuff acid card
-Grappling Hook/Tangle Wire
Note: if you don't have the problem, you don't need the fix!