Forum:More ED-E drama

This is on the PS3. While battling it out with the Overseer and his ghoul guards in Vault 34, I somehow "lost" ED-E (Boone was my other companion). I'm not sure if he went down in a blaze of glory or what, but I haven't seen him since. On my World Map, it shows ED-E's location as being at Vault 34, but when I travel there I can't find him anywhere. I tried the Vault 22 elevator trick and that didn't work. And everywhere I go, people react as if there is a floating eyebot behind me, even though his location shows as Vault 34. So I can't recruit Rex. Anybody have any other ideas?