Forum:Fist's warehouse is locked!!

Ok, so I'm at the first part of the game on the Citadel. I'm already past the cutscene with the council at Citadel Tower and now I need to kill Fist. After I kill everyone in Chora's Den, the back door to the warehouse is locked and I can't gain access. Also, I noticed that the initial fight with two of Saren's agents never happened when I approached Chora's Den, it just let me go straight to the firefight in the bar. I'm not sure but could it be because I never talked to Harkin? I decided to talk to Barla Von first since he was closest to Citadel Tower after talking to the council, and he told me where to find Wrex, then Wrex told me where to find garrus, and now I have them both. So that eliminated the need to talk to Harkin and just turned everyone in Chora's Den hostile. It is very frustrating and I don't want to have to start the game over to try talking to Harkin (yes, like a noob, I've only been saving in one file).