Created this account just so I could shed some light on the problem. If any mod or whatnot wants to delete it afterwards, feel free.
The problem is no with your computer, the problem is that there is a new hack that has been released. More information can be found at the battle.net website, where people are currently working on the problem.
To help make the process faster for the hack fix, please send that error file to
hacks@blizzard.com.
Good day.