Mackle help! The .jar won't open because of an "unknown developer"

 

guys if you are looking for shader packs, look online your self and see which one suits you most. there are many youtube videos with reviews and top 5's or whatever. I tested about 5 to 10 different packs before I decided on one.

 

Every time I use one they all turn out the same as internal -- aka, nothing really happens :l

 

are you sure you are doing it right? Have you dragged the zip folder in to the shaders folder and then selected it within game?

 

Yep. It worked in previous versions for me, but this one doesn't seem to want to.