I had thought about that before and tried but it didn't work. To be on the save side I tried it again, but is still didn't work. However, I got it work by accident, as I was trying for different areas to click on the door from. It seems that all guides didn't have the right location to be standing. As I was walking around a bubble popped up to announce that the guards are changing shift. Thank you for the help and sorry for taking up your time with this.
On other note: For the Crow of Destiny Quest, is the portal that leads to the cave village in Einbroch Field 1 going to come back?