-1. What is this fpt I keep hearing about, and how do I activate/deactivate it?

-2. So, I have duel flames, and I bought the flame texture as well (not knowing what it did)
I don't enjoy the way it emits textures from the flame, so I deactivated it but it's still doing it... I even sold the flame texture in hopes that it would turn it off... Still doing it! Could someone help me with that please?

Thanks in advance.

1. These are textures shown instead of your particles. In inversed colour.

2. I have also encountered the same problem as you.
The way to solve this is to deactivate/sell the flame particle texture.
Then even after you do /dl lucidspore, it still shows you the texture, right?
That's only visible for you now. The way to solve this is to go to your customs folder and there delete the flame.tga file.

Thanks so much!
One more thing; How do I activate/deactivate the fpt thing? I just want to see what the difference is.

If fpt = flame particle texture => Deactivate it just by clicking deactivate and deleting the file and activate by clicking activate and doing /dl lucidspore.
To see any difference upload a picture on the item.