This Texture Pack makes Iron and Copper ores look more realistic. (yay no more raw chicken when you break an iron ore!)
It also reskins and renames apples to acorns. (they come from oak trees after all)
This texture pack will probably give you an out of date error but it will still work just fine.
If you want to fix the error you can edit the pack.mcmeta file to have the right version number.