I was doing a quick rerun through expedition again, about the 6th playthrough, second with expedition, doing a handful of quests and grabbing new items. When I try to zone to Coretech headquarters either from my house then left 2 zones or from the elevator I get Zone transition failure. I had just finished getting the ACORN and was hoping for Aran to show in my house's basement and attack me again. Then I went to rail crossing and Lied about the train and talked the mysterious woman about the Free Drones, was given the fill Envoy quest and completed that, talked to her again outside of Junkyard and was given the door password. I warped back to Core City and went to the lower passages to the Free Drones door, used the intercom and gave the correct password, they said to come in but the door never opened. One of the zone transition errors is attached.