Duriel Quest Problem

[LavCat]

I thought that if you'd previously killed Duriel, then the staff chamber would be permanently open for you (presumably so all the millions of people addicted to Duriel runs could kill him repeatedly), but maybe there's something odd going on if you've killed him but not got quest credit for some reason.

I also thought that once one killed duriel the chamber would be permanently open. It did not seem to work that way. However I should explain that the quest was quite mixed up. When the patch came out and I started playing ladder, I wanted to get a low level character into act III for buying gray items. I let the barbarian kill duriel and another of my characters walked through to rescue Tyrael.

I solved the problem by bringing another new character along to open the chamber, and had two hereos in the tomb together (one keyboard). No deaths except for duriel.