Paintings destroy themselves after being placed

[Sweet_Tooth_RAF]

Paintings destroy themselves after being placed but only after I changed the paintings_kristoffer_zetterstrand.png. The paintings were would stay with that texture pack I tested it but I closed the game, changed one painting, launched the game and now they destroy themselves (irretrievable) right after being placed, even when I change back to Minecrafts vanilla texture pack. I even re-installed Tekkit to see if it was something else but I don't know how this could have happened. I've edited Sphax paintings before with no problem so I have no clue what went wrong or what I mistakes I could have made.