Well, I've been trying to get it to work but to no avail. It's doing this:

It's displaying all sides as the water port icon when I specifically told it otherwise. Here is my icon code:

@Override
    public void registerBlockIcons(IIconRegister reg){
        icons = new IIcon[11];

        icons[0] = reg.registerIcon(getTextureName() + "Front");
        icons[1] = reg.registerIcon(getTextureName() + "FrontWater1");
        icons[2] = reg.registerIcon(getTextureName() + "FrontWater2");
        icons[3] = reg.registerIcon(getTextureName() + "FrontWater3");
        icons[4] = reg.registerIcon(getTextureName() + "FrontWater4");
        icons[5] = reg.registerIcon(getTextureName() + "FrontActiveWater1");
        icons[6] = reg.registerIcon(getTextureName() + "FrontActiveWater2");
        icons[7] = reg.registerIcon(getTextureName() + "FrontActiveWater3");
        icons[8] = reg.registerIcon(getTextureName() + "FrontActiveWater4");
        icons[9] = reg.registerIcon(getTextureName() + "Side");
        icons[10] = reg.registerIcon(getTextureName() + "WaterPort");
    }

@Override
    public IIcon getIcon(int meta, int side){
        if (side == 0){
            return icons[10];
        } else if (side == 1){
            return icons[10];
        } else if (side == 2){
            return icons[0];
        } else if (side == 3){
            return icons[9];
        } else if (side == 4){
            return icons[9];
        } else if (side == 5){
            return icons[9];
        }

        return null;
    }

 

I have no idea why it's doing this or how to fix it. Am I doing something wrong?

*facepalms*

Ok, it's fixed now.