TruWitheredSoul

Okay, so, I want to test out a mod, the Tails mod, and there's a mod that it needs called Foxlib. So, I try and launch Minecraft, and this is what it says a few seconds after. "Minecraft Launcher has Stopped Working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available" Help? Also, when I take the mods out, it works normally, so is it the mods?