At around 3:30 pst I downloaded the DLC pack for MK3 Cyrax and Sektor - after testing them out and playing with Skarlet in training mode I went back to Challenge mode and the game locks up when I try to progress past Test Your Strike (Challenge #138).
Even when I pass that or try to buy my way past that and a couple other stages after it the game (and my system) locks me out.
Is this happening to anyone else?
I have the game installed to my hard drive so it boots from the retail disc - I don't know if this matters but I figured I could at least mention it.