For the main story quest of Drowning out the Voices, when using the electromagnetic reader at the prime locations, 4 of the locations work, but the 5th one does not. It can be targeted, but no action can be completed on this. It does not have to do with my level since I am level 46, which is the same as the quest level. It stinks since not being able to complete the quest means that I can not move on in the story line.