Have you looked it up?
Foxcraft Forums
TotalMM
Shamefulness
yes i have
TotalMM
And I am assuming you have found nothin?
RedTheFox999
What client do you use? OptiFine? Vanilla? 5zig? If you use OptiFine, you can usually crash from the graphics settings being too high. I don't know if changing them will work, but I'm just trying to offer some help. 
Shamefulness
ok, when u mean graphics too high, do you mean like performance, idk
Shamefulness
i use optifine or labymod btw