I have a feeling this might have been because I have fixed ED-E before 'liberating' the town, but I am pretty sure I have talked to Nash right after freeing the deputy, and he was supposed to trigger the quest start, but that never happened it seams.
Is there any help that someone can provide? Talking to the old guy Nash in his shop, has no real effect, as he only mentions "ED-E being brought in recently" and "Some people might be interested in the tech inside ED-E" or something along those lines.