Just installed patch 2.
Initial attempt, I got to the arena selection screen, then blue screen reboot.
Subsequent tries give me a "aceshigh.exe has stopped working" window immediately. No look at arenas. On the first attempt after reboot, I had to re-enter my name and password.
I can access my account information online, and the game runs fine offline. Even tried re-entering my credit card info to no avail.
I turned off all antivirus temporarily (I think) to test it. Still no go.