I have Industrialcraft2 and build craft on my server. When I try to right-click a iron furnace 
, it instantly black screens. Also, If I break a normal furnace, the game crashes the same way. The last Bug I have found is the electric furnace 
has the brewing stands GUI. I have also had the game crash when trying to put fuel individually into a furnace.
other than that, the mod is fantastic, nice job.