This is in the drawScreen. The code runs, and the Icon isnt null, but the icon isnt displayed on the gui. All the buttons work fine. This is the only part that doesnt work.

 

Icon itemIcon = craftMatrix[c].getIconIndex();
if (c == 0)
{
this.drawTexturedModelRectFromIcon(posX + 130, posY + 20, itemIcon, 16, 16);
}
if (c == 1)
{
this.drawTexturedModelRectFromIcon(posX + 150, posY + 20, itemIcon, 16, 16);
}

Nevermind. Solved.

Forgot to bind the TextureMap

this.mc.getTextureManager().bindTexture(TextureMap.locationItemsTexture);