Minecraft doesn't launch new versions.

This is very specific and so maybe its just a problem with my pc, but I when i downloaded the Flux 13 Minecraft Hack for a video to review on my YouTube Channel it said "Error! Unable to start Game" i've looked up multiple tutorials on possible reasons this isn't working and they all seem to work for everyone else but not in my case. Again maybe its just the Flux file but im not entirely sure.