Summary: During this quest, right after killing Magdha. I talk to Tyrael and continue to the city. I talk to Ashaera the first time to get past the guards, then talk to her a second time to get past the gate. The game crashes right after I talk to Ashaera to open the gate and see the emperor.
This has happened several times in both single player and multiplayer.
The issue code is: 169A1DCF-8CA2-4263-A716-48A4D5A73A13
I could figure out where to post that...