Every time I attempt to load a world in single player, the game immediately crashes. The launcher functions fine and the main menu appears no problem, but as soon as I hit "Create a New World" it goes to the dirt screen and stays there until it generates the crash report. I also had an existing world with which the same thing occurred. I have tried replacing the .minecraft file, downloading the latest Java, anything I could that didn't seem too drastic. Must puzzling of all is that I have not made any changes to my security software; I've done everything short of completely uninstalling my antivirus programs in an attempt to fix this and nothing changes. My crash report should be attached.

On a side note, multiplayer also freezes for an extensive amount of time before displaying the server menu. I have not tried joining a server, as I have assumed that the problem will present itself once more should I try.