FishStickington

Me and my friends were on a Voltz 2.0.4 server and we are all using 2.0.4 and needed to make some steel dust so i went up to the crafting table and sourrounded the iron with coal like you are supposed to and I was able to craft the dust. Although when I went to put it in my inventory it flashed in and then went back to the crafting table. We tried to spawn it through NEI but that didnt work and it said there is no item with this id. So we went into creative mode and spawn them and it worked and we could see the dust in the our inventory but when we dropped it or crafted with it or placed it, it dissapeared. Please help this kinda prevents us from crafting anything.